N S W E
Wildlife Expeditions

Wildlife of
Alaska

Alaska is North America's great wild stronghold-where tundra, taiga, and rainforest meet vast seas to sustain some of the planet's richest megafauna and migrations.
135 Species
1,481,346 km² Land Area
Overview

About Alaska

Alaska's wildlife is shaped by big, wild places and mostly whole food webs. Large public lands and few roads let predators and prey live together—brown and black bears, wolves, wolverines, moose, and caribou—while millions of seabirds and waterfowl pass through each year. Extreme seasons—from short Arctic summers to stormy coastal winters—drive big migrations, breeding booms, and predator-prey cycles. Key ecosystems run from Arctic tundra and coastal plains (caribou calving, muskox, bird breeding) to boreal forest (taiga) and wetlands (moose, lynx, wolves, beavers, waterfowl) and to Pacific kelp forests, fjords, and temperate rainforests where salmon feed bears and eagles. Offshore, rich ocean waters support whales, seals, sea lions, and huge seabird colonies. Salmon link land and sea, and remote, roadless areas let animals behave naturally at scales rare elsewhere.

Physical Features

Geography

Alaska's huge size and sharp climate zones (Arctic, subarctic, maritime) create many habitats that shape wildlife. Tundra and permafrost wetlands host caribou, muskox, and migratory birds. Boreal forest supports moose and wolves. Coastal rainforests and salmon rivers draw bears, eagles, and marine mammals. Mountains, glaciers, rivers, and a long Bering-North Pacific-Arctic coast link land and rich marine food webs.

1,481,346 km² (land area) Land Area
Largest U.S. state Size Rank
State Type
Elevation Range

Sea level to 6,190 m (Denali)

Coastline

Extensive coastline on the Arctic Ocean (Beaufort/Chukchi seas) and North Pacific/Bering Sea (Gulf of Alaska, Bristol Bay), including the Aleutian Islands and many fjords, estuaries, and coastal lagoons that support seabirds, salmon, seals, whales, and sea otters.

Key Landscapes

Arctic Coastal Plain and North Slope tundra (permafrost wetlands, barrier islands, lagoons) Brooks Range (alpine habitats; divides Arctic slope from Interior) Interior Alaska boreal forest/taiga and muskeg (fire-driven landscapes; major moose and predator habitat) Yukon River basin and delta (one of North America's great river corridors; wetlands and migratory bird habitat) Kuskokwim River basin and Yukon-Kuskokwim Delta (vast wetlands; waterfowl and shorebird concentrations) Alaska Range (includes Denali; alpine zones and glaciated valleys)
State Symbols

Official Wildlife Symbols

bird

Willow ptarmigan

Designated 1955

fish

King salmon (Chinook salmon)

Designated 1962

insect

Four-spot skimmer dragonfly

Designated 1995

wildflower

Forget-me-not

Designated 1917

tree

Sitka spruce

Designated 1962

animal

Moose (state land mammal)

Designated 1998

marine

Bowhead whale (state marine mammal)

Designated 1983

Parks & Reserves

Protected Areas

Alaska's protected areas are mostly large federal sites created or expanded under the Alaska National Interest Lands Conservation Act (ANILCA, 1980). They include national parks, preserves, wildlife refuges, and wilderness across Arctic tundra, boreal forest, mountains, and coastal/marine zones (Gulf of Alaska, Bering Sea, Alexander Archipelago). State parks and roadless tracts in Tongass and Chugach add local protection.

Protected Coverage

~35% (roughly one-third of Alaska is in major conservation units such as national parks/preserves, national wildlife refuges, and designated wilderness; additional public lands provide further de facto habitat protection).

National Parks & Preserves

Wrangell-St. Elias National Park and Preserve

~13.2 million acres (park + preserve)

North America's largest national park complex protects immense mountain, glacier, and river ecosystems that support wide-ranging carnivores and large ungulate populations, with relatively intact predator-prey dynamics.

Dall sheep Moose Grizzly bear Gray wolf Wolverine

Denali National Park and Preserve

~6.1 million acres

Famous for accessible wildlife viewing along the park road and for protecting a largely intact subarctic ecosystem centered on the Alaska Range, supporting high-density large mammals and natural predator-prey interactions.

Grizzly bear Caribou Moose Dall sheep Gray wolf

Gates of the Arctic National Park and Preserve

~8.4 million acres (park + preserve)

A vast, roadless Arctic/subarctic wilderness in the Brooks Range, important for migratory caribou herds, intact river corridors, and low-fragmentation habitat for wide-ranging mammals.

Caribou (Western Arctic and Central Arctic herds) Grizzly bear Gray wolf Wolverine Dall sheep

Katmai National Park and Preserve

~4.1 million acres

Globally renowned for concentrated brown bear viewing (especially during salmon runs) and for protecting salmon-rich river systems, coastal habitats, and volcanic landscapes that sustain high marine-terrestrial productivity.

Brown bear Sockeye salmon Bald eagle Sea otter Harbor seal

Glacier Bay National Park and Preserve

~3.3 million acres

A flagship temperate rainforest-to-tidewater glacier and marine ecosystem with rich feeding grounds for marine mammals and seabirds; notable for whale viewing and intact coastal food webs.

Humpback whale Steller sea lion Sea otter Harbor seal Bald eagle

Kenai Fjords National Park

~670,000 acres

Protects a productive nearshore marine ecosystem and the Harding Icefield; excellent for viewing seabird colonies and marine mammals where fjords concentrate forage and predators.

Orca (killer whale) Humpback whale Sea otter Puffins (e.g., tufted puffin) Harbor seal

State & Provincial Parks

Wood-Tikchik State Park

~1.6 million acres

The largest state park in the U.S., protecting an immense mosaic of lakes, wetlands, and tundra/taiga habitats in Bristol Bay's headwaters; key for waterfowl, fish, and large mammals in an otherwise road-poor region.

Moose Brown bear Trumpeter swan Sockeye salmon Arctic grayling

Chugach State Park

~495,000 acres

A major protected landscape adjacent to Anchorage that supports accessible viewing of large mammals and salmon streams, with alpine-to-coastal habitats and important wildlife movement corridors.

Moose Black bear Brown bear Dall sheep Bald eagle

Kachemak Bay State Park

~400,000 acres (approx.)

Coastal mountains, old-growth forests, and rich intertidal zones on Kachemak Bay provide excellent opportunities for seabirds and marine mammal viewing, especially in a highly productive marine environment.

Sea otter Bald eagle Harbor seal Orca (killer whale) Puffins

Wildlife Refuges

Arctic National Wildlife Refuge

~19.3 million acres

One of the most ecologically intact Arctic landscapes in North America, spanning tundra, mountains, and coastal plain; vital for migratory birds and for caribou calving and movements across an unfenced landscape.

Porcupine caribou Polar bear Muskox Snowy owl Arctic fox

Yukon Delta National Wildlife Refuge

~19.1 million acres

A globally significant wetland complex at the Yukon-Kuskokwim Delta that supports enormous breeding and migratory concentrations of waterfowl and shorebirds, plus salmon-rich river systems.

Emperor goose Cackling goose Tundra swan Sandhill crane Chinook salmon

Kodiak National Wildlife Refuge

~1.9 million acres

Protects much of Kodiak Island's mountainous and coastal habitats, famous for Kodiak brown bears and productive salmon systems; also important for seabirds and marine mammals along the coastline.

Kodiak brown bear Sockeye salmon Bald eagle Sitka black-tailed deer Sea otter

Alaska Maritime National Wildlife Refuge

~5.0 million acres (plus extensive marine/coastal units)

A vast network of islands, cliffs, and marine waters providing critical nesting habitat for millions of seabirds and haul-outs/rookeries for marine mammals across the Bering Sea and North Pacific.

Steller sea lion Northern fur seal Auklets (e.g., crested auklet) Puffins Murres

Wilderness Areas

  • Misty Fjords National Monument Wilderness (Tongass National Forest)
  • Kootznoowoo Wilderness (Admiralty Island National Monument, Tongass National Forest)
  • South Baranof Wilderness (Tongass National Forest)
  • Chuck River Wilderness (Tongass National Forest)
  • Noatak Wilderness (Noatak National Preserve)
  • Gates of the Arctic Wilderness (Gates of the Arctic National Park and Preserve)
Animals

Wildlife

Alaska's wildlife is defined by its scale and intactness: vast tundra, boreal forest (taiga), major mountain ranges, enormous river systems, and one of the longest coastlines on Earth. The state spans Arctic, subarctic, and maritime climates, creating strong contrasts between species-rich temperate rainforests in the southeast, salmon-driven ecosystems across the south and west, and migratory bird and caribou strongholds on the Arctic Coastal Plain. Marine biodiversity is especially prominent (seabirds, pinnipeds, cetaceans), while terrestrial communities feature large-bodied mammals and globally important seasonal migrations.

~110-120 species (including terrestrial and marine mammals) Mammals
~480-520 species recorded (many migratory; seabirds and waterfowl prominent) Birds
~0-3 species (very limited; mostly occasional/introduced records) Reptiles
~5-7 species (few native breeders; diversity limited by climate) Amphibians
~500+ species (dominated by marine fishes; dozens of freshwater species including salmonids) Fish
Examples

Iconic Species

Brown Bear (Coastal Grizzly) Among the highest-density bear viewing on Earth occurs where salmon runs concentrate bears (e.g., Katmai and other coastal systems), making Alaska a premier destination for brown bear observation.
Polar Bear
Polar Bear Alaska is one of the only U.S. places to reliably see polar bears in the wild, particularly along the Arctic coast where sea-ice dynamics shape seasonal presence.
Moose
Moose A defining boreal-forest and wetland species; Alaska supports some of North America's largest-bodied moose and offers frequent viewing along roads and river corridors.
Caribou
Caribou Large migratory herds are central to Alaska's tundra ecosystems and human cultures; seasonal movements can involve tens of thousands of animals across open landscapes.
Dall Sheep An emblem of Alaska's mountains, often seen on steep alpine terrain in the Alaska Range, Brooks Range, and other rugged regions.
Bald Eagle
Bald Eagle Extraordinary concentrations occur along the coast and salmon rivers-especially in Southeast Alaska-where marine productivity and spawning fish subsidize large local numbers.
Sea Otter
Sea Otter A charismatic nearshore keystone predator whose foraging can restructure kelp and invertebrate communities; common in many coastal areas and a hallmark of Alaska's marine wildlife experience.
Humpback Whale
Humpback Whale Seasonal feeding aggregations in Southeast and Southcentral Alaska make whale watching a signature experience; whales track dense krill and baitfish blooms.
Orca (Killer Whale) Frequently encountered in coastal waters; both fish-eating and mammal-eating ecotypes occur, providing a high-profile window into Alaska's complex marine food webs.
Sockeye Salmon
Sockeye Salmon Salmon are the ecological engine of many Alaskan systems, transporting marine nutrients inland and supporting bears, eagles, and people; sockeye runs are especially famous in some regions.

Endemic & Rare Species

Steller's Eider

Polysticta stelleri

Threatened in the U.S. (Alaska breeding and wintering populations of high conservation concern)

A sea duck of Arctic coasts and lagoons; Alaska contains critical habitats for a population that has experienced long-term declines and is a conservation priority.

Spectacled Eider

Somateria fischeri

Threatened in the U.S.

Breeds in western Alaska and winters in the Bering Sea region; notable for its restricted distribution and sensitivity to Arctic environmental change.

Short-tailed Albatross

Phoebastria albatrus

Globally threatened (rare visitor/forager in Alaska's North Pacific waters)

Occasionally forages in Alaskan waters; sightings are significant because global numbers were once extremely low and remain conservation-sensitive.

Cook Inlet Beluga Whale

Delphinapterus leucas

Endangered (distinct, isolated population)

A small, geographically confined beluga population in Cook Inlet; its isolation and low numbers make it one of Alaska's most conservation-critical marine mammals.

Steller Sea Lion (Western DPS)

Eumetopias jubatus

Endangered (western distinct population segment)

Rookeries and haulouts in parts of Alaska are central to recovery efforts; population dynamics are closely tied to fisheries, prey availability, and ecosystem change.

Aleutian Cackling Goose

Branta hutchinsii leucopareia

Conservation success; formerly Endangered in the U.S., now recovered/delisted

A high-profile recovery story tied to island predator control and habitat protection; still notable for its restricted breeding distribution in the Aleutians.

Wood Bison

Bison bison athabascae

Reintroduced; regionally rare and managed

Not native to most of Alaska historically but now established via reintroduction in parts of Interior Alaska, creating a unique large-herbivore viewing opportunity.

Notable Populations

  • Some of the world's largest remaining wild salmon runs (multiple Oncorhynchus species), which drive ecosystem productivity and support globally important fisheries and wildlife populations.
  • Major seabird colonies and marine bird diversity in the Gulf of Alaska, Bering Sea, and Aleutians, reflecting highly productive ocean ecosystems.
  • Large migratory caribou herds (statewide), among North America's most significant large-mammal migrations by biomass and distance in Arctic/subarctic landscapes.
  • High densities of coastal brown bears in salmon-rich systems (notably along parts of the Alaska Peninsula and Kodiak-associated regions), making Alaska a global bear-viewing stronghold.
  • Internationally important breeding and staging areas for migratory waterfowl and shorebirds on Arctic Coastal Plain wetlands and western Alaska river deltas.
  • Seasonal concentrations of humpback whales in Southeast/Southcentral Alaska feeding grounds that are nationally significant for whale watching and population recovery monitoring.

Recent Changes

  • Continued recovery and range re-expansion of humpback whales in Alaska feeding areas following long-term protections, improving sighting rates in many coastal regions.
  • Ongoing conservation concern for Cook Inlet beluga whales, with sustained low abundance despite protections; pressures include habitat change, prey shifts, and human activity.
  • Sea-ice loss and shifting ocean conditions are altering timing/distribution of ice-associated species (e.g., polar bears, some seals) and influencing prey availability; this can change where and when wildlife is encountered.
  • Reintroduction and establishment of managed wood bison herds in Interior Alaska has added a new large-herbivore component to some landscapes.
  • Localized changes in seabird breeding success and distribution in parts of the Gulf of Alaska/Bering Sea linked to marine heatwaves and prey-field shifts (some colonies show periodic die-offs or reduced productivity).
  • Ongoing management and variable recovery status for western Steller sea lions; some areas show improvement while others remain below historical levels, reflecting complex ecosystem and fisheries interactions.
Visit

Wildlife Viewing

Alaska has big habitats: tundra, boreal forest, glacier-fed coasts, and temperate rainforest. You can see brown/grizzly and black bears, moose, caribou, Dall sheep, wolves (less often), sea otters, seals, sea lions, many whales, and huge shorebird and waterfowl migrations. Access by road (Denali Highway/Denali Park Road, Kenai Peninsula, Anchorage refuges), boat, or plane. Plan by season, daylight, and salmon runs.

Best Seasons

Spring (April-May)

Wildlife re-emerges as snow retreats: moose and bears become more active; migratory birds return in big numbers (especially on the Kenai and around Anchorage). Shoulder-season crowds are lower, and you can combine birding with early boat trips in Southeast and Southcentral when seas permit. Expect variable weather and lingering snow/ice in interior and higher elevations.

Early Summer (June-mid July)

Peak daylight and broad access: Denali Park's wildlife viewing improves along the park road; calving season for some mammals means heightened activity and opportunities to spot young (from a distance). Coastal boat tours in Kenai Fjords/Prince William Sound are strong for humpbacks, orcas, puffins, and sea otters. Mosquitoes can be intense inland; bring head nets/repellent.

Late Summer (mid July-September)

Best time for bears and salmon: bear viewing is at its peak where salmon gather (e.g., Katmai/Brookes Falls, Lake Clark, parts of Kodiak and Southeast). Whale watching stays great, and tundra and alpine hiking is best. Fall colors reach the Interior and migratory birds start moving. Book flights and lodges early.

Fall (September-October)

Moose rut increases chances of seeing and hearing bulls (especially along the road system in Southcentral and the Interior). Cooler temps reduce insects, crowds drop, and aurora viewing improves in Interior Alaska. Coastal wildlife remains strong into early fall, but storms increase and many tours wind down by October.

Winter (November-March)

A different kind of wildlife trip: excellent aurora season and strong opportunities for winter ecology experiences-tracking, wolves (still rare), fox, ptarmigan, wintering eagles, and marine mammals in some coastal areas. Daylight is short, temperatures can be extreme inland, and access to remote areas often requires guides or air taxis.

Top Wildlife Experiences

  • Ride the Denali National Park transit bus (summer) for big-mammal scanning along the park road-look for grizzly bears, moose, caribou, Dall sheep, and raptors; choose longer routes for better odds and bring binoculars.
  • Book a bear-viewing day trip to Katmai National Park (often via floatplane from King Salmon) to watch brown bears fishing at/near Brooks Falls during salmon runs; go early/late in the day for fewer people when possible.
  • Take a Kenai Fjords National Park wildlife & glacier cruise out of Seward for humpback whales, orcas, Steller sea lions, sea otters, puffins, and kittiwakes against dramatic ice and fjord scenery.
  • Join a Prince William Sound cruise or kayak-supported wildlife outing from Whittier or Valdez to spot sea otters, harbor seals hauled out near ice, porpoises, and nesting seabirds; calm coves can be especially productive.
  • Visit the Alaska Wildlife Conservation Center near Portage to see Alaska animals up close—bears, musk ox, wood bison, wolves—and learn about conservation. Great for families and a "guaranteed" wildlife day if tours are canceled.
  • Watch the fall salmon run and bald eagle concentrations around Haines/Chilkat Valley (late summer-fall), one of the most accessible places to see large numbers of eagles along river corridors.
  • Explore the Homer-Kachemak Bay area for a mix of marine mammals and birding: take a bay cruise for sea otters and seabirds, then add a guided birding session for shorebirds and waterfowl in nearby wetlands and tidal flats.
  • Plan a specialized tundra/wetlands birding day at the Copper River Delta (Cordova area) during peak spring migration for extraordinary shorebird and waterfowl numbers in a globally important habitat.

Wildlife Watching Types

Whale watching (humpbacks, orcas; occasional gray/fin in some areas) Marine mammal watching (sea otters, harbor seals, Steller sea lions, porpoises) Brown/grizzly bear viewing focused on salmon runs and coastal meadows Moose viewing (especially roadside corridors and wetlands; rut in fall) Caribou and Dall sheep viewing (Interior and alpine habitats; often best via Denali/road-to-tundra access or flightseeing) Birding hotspots (migratory shorebirds, seabird colonies, raptors, waterfowl) Seabird and puffin viewing (coastal boat trips, island colonies) Winter wildlife tracking and aurora-focused ecology trips (fox, ptarmigan, winter raptors; occasional wolf sightings) Photography-focused wildlife safaris (boat, bus, floatplane-supported)

Guided Options

  • Denali National Park ranger programs and shuttle/transit bus system (interpretive talks, wildlife viewing from the road corridor; reservations recommended in peak season)
  • Katmai and Lake Clark bear-viewing guided day trips (typically floatplane-based; often paired with photography guidance and strict bear-safety protocols)
  • Kenai Fjords National Park wildlife & glacier cruises (half- and full-day options from Seward; some offer naturalists on board)
  • Prince William Sound wildlife cruises and guided sea-kayak trips (from Whittier/Valdez; great for close, low-impact viewing)
  • U.S. Fish & Wildlife Service programs at Alaska National Wildlife Refuges (e.g., visitor center talks and seasonal events near Anchorage-area refuges; check refuge calendars)
  • Chilkat Bald Eagle Preserve area guided viewing/photography tours (Haines; best timed to salmon runs and peak eagle presence)
  • Local birding guides and small-group birding tours in key migration areas (Copper River Delta, Anchorage wetlands, Kenai Peninsula)
  • Licensed air taxi and backcountry guide services for remote wildlife access (especially for bear country and tundra habitats-choose operators experienced with Leave No Trace and wildlife-safe practices)
Habitats

Ecosystems

Alaska covers Arctic, subarctic, and maritime climates over a huge area with long coasts, big rivers, permafrost lowlands, and high mountains (Alaska Range, Brooks Range, Wrangell-St. Elias). This creates sharp changes in temperature, rain, and seasons, supporting vast tundra and boreal forests, the largest temperate rainforests in North America, rich coastal seas, wetlands, and salmon rivers.

Biomes

Tundra

Arctic and subarctic tundra dominates the North Slope and western/northern lowlands, with permafrost soils, sedge-moss meadows, dwarf shrub tundra, and coastal plain wetlands; critical for migratory birds and caribou.

Very extensive across northern Alaska (North Slope) and large parts of western Alaska; among the state's dominant biomes.

Boreal Forest (Taiga)

Taiga/boreal forest and woodland in interior Alaska, characterized by black spruce, white spruce, birch and aspen on warmer sites, widespread fire regimes, and large river floodplains.

Dominant across much of the Interior (Yukon and Tanana basins), forming one of the largest continuous biome areas in the state.

Temperate Rainforest

Cool, extremely wet coastal rainforest in Southeast Alaska (Tongass) and parts of the Gulf of Alaska coast, with Sitka spruce-western hemlock forests, dense understory, and high biomass tied to maritime climate.

Regionally concentrated but highly significant in Southeast and some coastal pockets; smaller area than tundra/taiga but ecologically distinctive.

Alpine

High-elevation alpine zones in the Alaska Range, Brooks Range, Wrangell-St. Elias, Chugach, and coastal mountains, including alpine tundra, talus, snowfields, and extensive glaciers shaping headwaters and fjords.

Widespread in mountainous areas statewide; patchy by elevation but prominent visually and hydrologically.

Freshwater

Immense freshwater networks-glacial and clearwater rivers, thousands of lakes and ponds, and salmon-spawning watersheds (e.g., Bristol Bay drainages, Yukon, Kuskokwim, Copper).

Statewide; densest lake/pond and wetland complexes in lowlands and permafrost regions; major river corridors across Interior and western Alaska.

Marine

Highly productive marine ecosystems in the Bering Sea, Chukchi and Beaufort seas (Arctic), and Gulf of Alaska, including shelf seas, upwelling/mixing zones, ice-edge productivity, and deep fjords.

Extensive: Alaska's coastline spans Arctic to North Pacific; includes vast continental shelf areas (especially Bering Sea) and deep offshore waters.

Wetland

Large peatlands, marshes, coastal wetlands, and riverine/floodplain wetlands (many underlain by permafrost), supporting waterfowl, shorebirds, and carbon storage; includes Yukon-Kuskokwim Delta wetlands and tundra ponds.

Very extensive in western Alaska, North Slope coastal plain, and many interior lowlands; among the most widespread habitat-forming biomes.

Habitats

Tundra

Arctic coastal plain tundra on the North Slope (polygonal ground, thaw lakes) and broad western tundra uplands; major caribou calving and migratory bird breeding areas.

Coniferous Forest

Interior taiga dominated by black spruce on cold, poorly drained sites; white spruce along rivers; frequent wildfire influence and permafrost-associated soils.

Deciduous Forest

Birch-aspen stands on warmer, well-drained sites in the Interior; often post-fire succession and important browse habitat for moose.

Rainforest

Southeast Alaska coastal rainforest (Tongass) with Sitka spruce and western hemlock, high rainfall, mossy understories, and complex old-growth structure.

Woodland

Open spruce woodlands and treeline transition zones grading into alpine and tundra, especially in the Interior and foothills.

Shrubland

Willow and alder shrublands on floodplains, avalanche tracks, and tundra shrub zones; important for moose, birds, and riparian stability.

Mountain

Major ranges (Brooks, Alaska, Chugach, Wrangell-St. Elias) with steep relief, glaciation, and diverse microclimates driving sharp habitat zonation.

Alpine Meadow

Short growing-season alpine meadows and heaths above treeline in the Alaska and coastal ranges; key summer forage for Dall sheep, mountain goats, and small mammals.

Cliff/Rocky Outcrop

Sea cliffs and inland escarpments used by nesting seabirds and raptors; includes Aleutian and Southeast fjord landscapes.

Cave

Limited but present, especially in Southeast Alaska karst (e.g., Prince of Wales Island) with subterranean streams and bat roost potential.

River/Stream

Large, braided glacial rivers and clearwater systems (Yukon, Kuskokwim, Copper, Susitna) with extensive floodplains and salmon runs.

Lake

Glacial lakes and lowland lake-rich terrains (Interior and Arctic coastal plain thaw lakes), supporting fish, waterfowl, and seasonal productivity.

Pond

Abundant tundra ponds and thermokarst basins in permafrost regions, vital for breeding waterbirds and invertebrate productivity.

Wetland

Yukon-Kuskokwim Delta wetlands, Interior peatlands, and tundra wetlands; major global waterfowl breeding and staging areas.

Marsh

Coastal and river-delta marshes with sedges and grasses, especially in western Alaska and along low-gradient estuaries.

Bog

Peat-accumulating bogs and fens in cool, wet lowlands (notably parts of Southeast and Interior), strong carbon storage function.

Estuary

Salmon-rich estuaries and tidal flats (e.g., Cook Inlet systems, Southeast fjords) linking marine-derived nutrients to terrestrial food webs.

Coastal

Extremely long, diverse coastline: Arctic barrier islands and lagoons; Gulf of Alaska fjords; Aleutian volcanic coasts; Southeast archipelago.

Beach

Barrier island and sandy/gravel beaches on the Arctic and Bering coasts; important haul-outs and nesting areas in some regions.

Rocky Shore

Rocky intertidal zones in the Gulf of Alaska, Aleutians, and Southeast, with rich kelp-associated and intertidal communities.

Kelp Forest

North Pacific kelp forests along the Gulf of Alaska, Aleutians, and Southeast, supporting fish, invertebrates, sea otters, and coastal food webs.

Open Ocean

Pelagic habitats of the North Pacific and Arctic margin supporting seabirds, marine mammals, and highly migratory fish.

Deep Sea

Deep offshore habitats beyond the continental shelf, including slope and basin environments in the Gulf of Alaska and North Pacific.

Seabed/Benthic

Benthic shelf and slope habitats (notably the Bering Sea shelf) supporting crabs, groundfish, clams, and other benthic productivity.

Urban

Localized urban habitats around Anchorage, Fairbanks, Juneau and regional hubs; significant human footprint is concentrated but small relative to land area.

Suburban

Low-density suburban development around major population centers and road corridors, often adjacent to forest, wetland, and riparian habitats.

Agricultural/Farmland

Limited agriculture (e.g., Matanuska-Susitna Valley and Delta Junction) with hay, vegetables, and pasture in pockets of suitable soils/climate.

Ecoregions

WWF: Alaska Peninsula montane taiga WWF: Aleutian Islands tundra WWF: Arctic coastal tundra WWF: Beringia lowland tundra WWF: Beringia upland tundra WWF: Cook Inlet taiga WWF: Interior Alaska-Yukon lowland taiga WWF: Interior Alaska-Yukon upland taiga WWF: Northern Alaska tundra WWF: Northwest Alaska boreal forest-tundra transition WWF: Pacific Coastal Mountain icefields and tundra WWF: Ranges of the Alaska-Yukon border (alpine/icefield complexes) WWF: Southeast Alaska coastal forests (temperate rainforest) WWF: South Central Alaska coastal forests WWF: Wrangell and St. Elias Mountains (alpine/icefields) EPA Level III (Alaska): Arctic Coastal Plain EPA Level III (Alaska): Brooks Range / Brooks Range Tundra EPA Level III (Alaska): Intermontane Boreal (Interior Alaska) EPA Level III (Alaska): Alaska Range EPA Level III (Alaska): Bering Taiga EPA Level III (Alaska): Bering Tundra EPA Level III (Alaska): Aleutians EPA Level III (Alaska): Ahklun and Kilbuck Mountains EPA Level III (Alaska): Bristol Bay-Nushagak Lowlands EPA Level III (Alaska): Copper River Basin EPA Level III (Alaska): Gulf of Alaska Coast / Coastal Rainforests EPA Level III (Alaska): Alaska Peninsula EPA Level III (Alaska): Cook Inlet Basin EPA Level III (Alaska): Alexander Archipelago (Southeast Alaska)
Protection

Conservation

Primary Threats

  • Alaska is warming fast, causing sea-ice loss that harms polar bears, ringed, bearded seals, and walrus, and erodes coasts that destroy dens and nests. Permafrost thaw sends more silt, nutrients into rivers and damages roads, buildings. Ocean warming and glacier retreat shift prey and salmon timing, hurting fisheries.
  • Alaska's Arctic and subarctic collect long-range pollutants (POPs, mercury) that build up in marine mammals and fish people eat. Local hotspots: old military/industrial sites, fuel spills, more ship traffic. Microplastics, debris, and lost fishing gear harm seabirds and marine life.
  • Large-scale hardrock mining proposals and operations in some watersheds can increase risks of habitat fragmentation, road building, tailings storage failures, acid mine drainage, and heavy-metal contamination-especially consequential where salmon-bearing rivers support broad food webs and subsistence economies. Exploration activity can also elevate disturbance and access in previously roadless areas.
  • Roads, pipelines, ports, and airstrips break up habitat and let more people in, raising disturbance and harvest. In the Arctic, thawing permafrost means more repairs and dirt in streams. More shipping and ports raise noise, strike, and spill risk for marine mammals and seabirds.
  • Even with active management, Alaska fisheries suffer from ecosystem shocks like marine heatwaves that cause sharp stock declines and food-web changes, notably in the Bering Sea. Bycatch and prey competition harm Steller sea lions and seabirds; salmon face added stress when ocean survival falls and rivers warm.
  • Hunting for food is vital in Alaska and mostly sustainable, but local overhunting can happen as access grows or climate stress lowers some populations (e.g., caribou). Disputes over predator control and sustained-yield rules can hurt local biodiversity goals.
  • Alaska has less widespread habitat change than most states, but local loss occurs from coastal erosion caused by climate change, riverbank collapse as permafrost thaws, growing towns and industry, and more fires in boreal forests that reduce mature conifer areas. Past Tongass logging broke up some lowlands.
  • Commercial logging is far smaller than historic peaks, but where it occurs (especially in portions of Southeast Alaska's temperate rainforest), it can fragment old-growth habitat, affect watershed processes important for salmon, and alter nesting/foraging habitat for forest-dependent birds and mammals. Legacy road networks can continue to influence erosion and access.
  • Permafrost thaw, changed freeze-thaw cycles, and more wildfires alter wetlands, streams, and lakes. River engineering near towns (bank armoring, dredging) and culverts block habitat links. Hatcheries in parts of the Gulf of Alaska can change competition and genetics of wild salmon.
  • Wildlife disturbance is increasing near road corridors, popular parks, river corridors, and coastal haul-outs. In marine environments, vessel noise and approach can disrupt feeding and resting behavior of whales and seals; on land, recreation and tourism can affect denning (bears) and nesting (raptors, shorebirds), particularly in concentrated use areas.
  • As salmon timing and berries change, bears spend more time near towns, fish camps, and landfills, raising conflicts and animals killed. Coastal erosion and community moves bring people into areas with moose, wolves, and bears. Roads also cause more vehicle strikes and animals being removed.
  • Alaska's cold climate limited invasions, but warming and more shipping raise risks. Aquatic invaders include pathogens and organisms moved on gear, boats, and ballast water. Invasive plants take hold along roads, gravel pits, and disturbed sites. Invasive tunicates and other fouling organisms threaten coasts.
  • Warming can spread parasites and disease-carrying animals, raising illness in birds and mammals. Harmful algal blooms and marine toxins in some coastal waters harm seabirds, marine mammals, and foods people eat. Avian influenza and other wildlife diseases cause occasional risks along migratory bird flyways.
  • In some regions, declining sea-ice and changing marine productivity reduce availability of traditional subsistence resources (e.g., seals, walrus access). Local prey depletion near rookeries/haul-outs and shifting fish distributions can reduce foraging efficiency for marine mammals and seabirds, increasing energetic stress.
Fun Facts

Did You Know?

Alaska's wood frogs survive winter by freezing solid: their hearts stop and they can have ice in their bodies, then thaw and hop away in spring-a rare adaptation among vertebrates documented in Interior Alaska.

Arctic ground squirrels in Alaska can hibernate with body temperatures below 0°C (supercooled) without freezing-among the lowest hibernation body temperatures measured in any mammal.

Polar bears in Alaska are truly "sea-ice hunters," not land predators: most of their calories come from seals caught from sea ice, and pregnant females come ashore mainly to den.

Southeast Alaska's temperate rainforest is fertilized by the ocean: bears and eagles drag salmon into the forest, and salmon-derived nitrogen has been measured moving into streamside trees and plants.

In November, the Chilkat River near Haines draws one of the world's largest gatherings of bald eagles-often thousands at once-because late salmon runs coincide with open water kept ice-free by groundwater upwelling.

Kodiak Island's Kodiak bears are the largest brown bears on Earth-big adult males can top ~1,500 lb (680 kg), and the subspecies is found only in Alaska's Kodiak Archipelago.

The Alaska-Yukon moose is the largest moose subspecies in the world; mature bulls can exceed ~1,600 lb (725 kg) and grow antlers over 6 ft (1.8 m) across.

Bristol Bay supports the planet's largest wild sockeye salmon fishery; annual runs commonly reach tens of millions of fish, and recent peak years have approached ~80 million returning sockeye.

St. Paul Island (Pribilof Islands) hosts the largest northern fur seal rookery in the world-an outsized share of the species' global breeding population gathers on its beaches each summer.

Bowhead whales migrating along Alaska's Arctic coast are the longest-lived mammals known; individuals have been scientifically aged at 200+ years (including whales found with centuries-old embedded hunting gear).

Alaska is the largest of the 50 states of the United States, located on the northwest border of Canada. Because of its proximity to the North Pole, during the winter months, there are parts of Alaska that do not have sunlight for two months. In summer, those same areas do not have a sunset for nearly three months. Alaska’s climate primarily ranges between subarctic and tundra.

Despite its harsh climate and strange daylight hours, Alaska has an abundance of native wildlife, both common and rare. The northernmost state is home to 112 species of mammals, several species of large and small rodents, 530 different types of birds, and lots of other kinds of strange and wonderful wild animals. There are even three separate shark species found in the waters off the coast of Alaska. In total, there are around 1100 vertebrate species that call Alaska home. Many of these animals are dangerous, and several others are endangered.

The Official State Animals of Alaska

Moose, Alaska’s state animal are capable of growing up to eight feet at the shoulder

The State animal of Alaska is the moose (Alces alces). Moose, whose name comes from a native word, is the largest of the deer family, and stands nearly eight feet tall at the top of their antlers. These antlers, which only grow on male moose, can reach up to six feet in width. These antlers fall off every year of a moose’s 15-20 year life span, providing a winter food source for squirrels and other rodents. Moose can weigh up to 1800 and are dangerous to humans.

Alaska also has a state bird, which is the Willow Ptarmigan. While this bird is also found in parts of Canada, Alaska is the only state where this bird is found. It is one of only a handful of state birds that can be legally hunted. It is also one of the only Alaskan birds which does not migrate south in the winter. It was designated the official bird even before Alaska was recognized as one of the now 50 states.

There is also a state marine mammal, the bowhead whale, and a state fish, the giant king salmon. They even have a state insect! That distinction goes to the four-spot skimmer dragonfly.

Where To Find The Top Wild Animals in Alaska

Brown bear in water

Grizzly Bears can be found all over Alaska

While many species are confined to single areas, moose, birds, and Alaska’s rodent population, which includes beavers, lemmings, voles, squirrels, porcupines, and hamsters, can be found all across the inhabited parts of the state.

A large portion of the wildlife in Alaska can be found in Denali National Park and Preserve, located between Fairbanks and Anchorage. It is said to be the least expensive of the parks and also to be best because it is located in the interior of the state. Some of the most common animals to be spotted in Denali and the interior are:

  • Grizzly Bear – These bears are found all over the state. There is a larger subspecies found only on the Kodiak Islands that rival polar bears for size! These bears are extremely territorial and not at all afraid of humans. Unprovoked attacks are rare, but they do happen.
  • Dall Sheep – These cliff climbing sheep are found all over the mountains of Alaska. They are solid white with curved and curled horns. The distinctive ridged circles on their horns are caused by the noncontinuous growth patterns, which are seasonal each year. They can live as long as 20 years in the wild, though 12 years is more common.
  • Caribou – Caribou are a type of reindeer. They are most commonly called Porcupine Caribou, after the river that makes up part of their roaming grounds. During the summer, when mosquito populations are at their worst, caribou herds head onto the ice fields to avoid them. Though their numbers are still in the 10,000s, between 2010 and 2016, their population dropped by over 60 percent. The full reasons for this are unknown, though hunting undoubtedly was a partial factor.
  • Wolves – The howl of a wolf is fairly unmistakable. For the most part, wolves are wary of humans and stay away. That is a very good thing because wolf packs are efficient predators and have been known to kill wildlife herds without eating any of the kills. All modern dogs can be traced back to wolves.
  • Black Bear – There are about twice as many black bears in Alaska as any other bear. Unlike grizzlies, black bears are fairly docile and generally won’t attack unless they feel threatened. Their diet is mostly vegetarian.
  • Flying Squirrel – Unlike other squirrels, flying squirrels have excess skin and fur that is webbed between their front and hind limbs. These strange flaps combined with their light weight allow them to float between distant branches. Though these gliding rodents are about a foot long from their nose to the tip of their tail, they weigh less than five ounces!
  • Porcupine – These are Alaska’s second largest rodent, weighing in at nearly 15 pounds. Their diet consists of tree bark, buds and leaves. Their quills, successfully able to discourage all but a few predators, are often used by native tribes to adorn their traditional clothing.

There are several other state- and national parks in Alaska as well, all of which are recommended viewing locations for wildlife. Other places to see wildlife in Alaska include Chugach State Park, Katmai National Park, and Glacier Bay National Park.

The Most Dangerous Animals In Alaska Today

An Apennine wolf in the wild close up

Wolves are one of Alaska’s most dangerous predators

Believe it or not but the most dangerous (deadliest) animal in Alaska is actually dogs. Between 1992-2002 there were 9 dog-related deaths in the state. Below you’ll find some other dangerous creatures that call Alaska home.

  • Moose – Though Moose are not predators they are one of Alaska’s most dangerous types of wildlife. Their immense height and weight, combined with their huge antlers and unpredictable nature, make them a serious danger to humans who happen upon one in the wild. These beasts can run up to 35 miles per hour.
  • Polar Bears – Polar Bears definitely are predators, and very dangerous ones. Because of the extreme conditions in which they live, encounters between humans and Polar Bears are thankfully rare, but these gigantic hypercarnivores are ferocious and deadly. They can grow as tall as 12 feet and weigh as much as a full ton.
  • Grizzly and Black Bears – Common throughout Alaska, both of these bears can be extremely dangerous. Grizzlies are very aggressive and territorial, while Black Bears will usually only attack if threatened or provoked, but avoiding both is recommended.
  • Wolves – This living ancestor of all modern dogs can weigh as much as 150 pounds. It is rare for wolf packs to attack people, but they are capable of decimating a small herd of other animals, and could be dangerous to a human under the right conditions.
  • Walrus – Walrus, who can live nearly 40 years, weigh more than twice as much as the largest recorded Polar Bear, and can grow up to 16 feet long. These strange and massive mammals have taken down small boats filled with people who got too close to their young.

Endangered Animals In Alaska

A Polar Bear, The white bear is center frame. looking toward the camera. The bear's head is frame left, it is standing on ice/snow, swimming-pool-blue water is visible in the background.

Polar bears are an endangered species in the state of Alaska due to a shrinking habitat and global warming

According to the IUCN Red List, the following are listed as vulnerable, threatened, or endangered.

  • Northern sea otter (Enhydra lutris kenyoni) – In the last 40 years, sea otter populations have declined by between 55-65 percent. This was after commercial harvesting in the early 1900s had reduced their numbers to the hundreds. Suspected causes of their dwindling numbers include oil spills and other pollution, increased predation by killer whales, becoming ensnared in fishing nets, and interference caused by various other human activities.
  • Polar bear (Ursus maritimus) – There are estimated to be about 4000 polar bears left in existence. The primary threat to them is habitat loss due to rising global temperatures. Polar bears require sea ice to survive and with melting polar ice caps on the rise, they are at risk of going extinct if nothing changes. Besides the melting ice, their dens are threatened by seismic survey practices.
  • Spectacled eider (Somateria fischeri) – It is not known exactly what is causing the eider populations to decline. Possible causes are hunting for feathers, ingestion of lead shot by the eiders themselves, and an increase in predators. Their numbers are currently being closely monitored and attempts are being made to do away with or at least reduce the use of ammunition containing toxic lead.
  • Short-tailed albatross (Phoebastria albatrus) – These large seabirds only breed in two island locations, one of which has active volcanic activity. This volcanic activity combined with poor fishing practices and years of being hunted for their feathers has resulted in dwindling populations. Little can be done about the volcano, however, hunting these albatross is now outlawed, and fishing practices have been changed to decrease the mortality rate.
  • Wood bison (Bison bison athabascae) – Only about 4000 Wood Bison remain, spread across seven wild herds. This bison has actually gone extinct within Alaska itself and the Alaska Department of Fish and Game, in coordination with the Alaska Wildlife Conservation Center, has been working toward releasing a currently captive herd of Wood Bison back into Alaska once their numbers are high enough.

The Largest Animal in Alaska

Largest Land Animal in North America - American bison walking and looking for food in Yellowstone National Park, Wyoming, USA.

The wood bison is Alaska’s largest mammal. Current populations, however, consist of stock imported from Canada

Also referred to as the mountain bison, the wood bison (Bison bison athabascae) is Alaska’s largest animal outdoing even its close cousin, the plains bison in the size stakes. Six feet tall at the shoulder, it is capable of tipping the scales at 2,000 lbs. The bearded bovine which is also recognizable by its curved horns also has a hump which slopes up from its shoulders and slopes down towards its middle.

There’s also that huge head, sturdy skeletal structure, and those immensely powerful muscles too which serve to shift piles of powdery snow to get to the nourishing grass buried beneath all that frost in winter.

Fun fact: The last sighting of a native member of this species occurred over a century ago. The current population of wood bison in Alaska are not native to the region but have been imported from Canada which has plenty to share.

The Rarest Animal in Alaska

mountain lion

The cougar is one of the rarest animals in Alaska and several reported sightings have actually been of lynx or other mammals

It might be especially bountiful in rugged mountainous Colorado, sunny California, or verdant Oregon, but in Alaska, the cougar is pretty rare. Although experts report yearly sightings of America’s largest feline predator, the fact remains that the Last Frontier is far from the puma’s favorite state.

Which sort of places Alaska in the same company as Illinois, Iowa, and Kansas in this regard. Because there have been confirmed sightings of the mountain lion in each of these states. In Alaska, sightings of pumas are so rare that experts have reported that they have since been imbued with a mystical-like quality. The fact that they are incredibly elusive doesn’t help either, nor does the fact that most sightings are actually of lynx, rather than of the cat known as felix concolor. One subject of a particular series of sightings actually turned out to be a domestic canine with light-colored fur.

Lakes in Alaska

Tongass National Forest, Alaska - US State, Adventure, Backgrounds, Beauty

Alaska is home to 3 million lakes with 3,000 named inland bodies of water.

Alaska is home to more than 3 million bodies of water, with about 3,000 named lakes in its borders. Let’s take a look at some of the most incredible Alaskan lakes!

  • Iliamna Lake: The eighth-largest lake in the United States and Alaska’s largest, this body of water is ideal for salmon and trout fishing. It is also the perfect spot for fans of wildlife thanks to the presence of fishing lodges which provide food and shelter, and the possibility of exploring its surface and surroundings on foot or by boat. Bears can be seen engaging in angling and catching delicious salmon, and freshwater seals too taking to the water gracefully.
  • Skilak Lake: Fed by the Kenai River, this lake is home to mammoth king salmon, rainbow trout, and Dolly Vardens. It is notable for its pristine water, and rocky bed, as well as its great depth (528 feet). Its location is no less impressive as visitors will get to see the spruce and aspen forests along its shores which give way to the sheer walls of the surrounding valley. Its environs are also home to wildlife including black and brown bears, beavers, coyotes, moose, lynxes, and wolves.
  • Kenai Lake: Renowned for the beauty of its waters which are a dazzling turquoise, Kenai Lake also serves as the headwaters of the river with which it shares its name. The body of water which has a zig-zagged shape, also flows past the Chugach Mountains. It is pretty large at 22 miles long, and has a depth of 540 feet at its deepest point.

Discover the Snowiest Place in Alaska

Valdez Alaska

Valdez is surrounded by the Chugach Mountain range shown here with the Richardson Highway which passes through the mountains and through the city

Although Alaska isn’t the snowiest state, it is home to Valdez, one of the snowiest cities in the entire United States. Valdez, Alaska has a subarctic climate and receives an average of 20 feet of snowfall each year.

The city provides stunning views of the snow-topped Chugach Mountains, and close by there is the Shoup Glacier. Valdez is also home to rainforests, tidewater glaciers, and caves, making it a perfect vacation spot for lovers of nature.

Valdez also boasts an abundance of marine and terrestrial wildlife including humpback whales, orcas, and sea lions. It is also a haven for birdwatchers and avian enthusiasts will be able to admire Arctic terns, Canada geese, cranes, herons, kingfishers, kittiwakes, oystercatchers, and plovers, busily going about their daily activities.

The Flag of Alaska

Flag of Alaska waving in the wind

Alaska’s flag was designed by Benny Benson and was flown for the first time on 9 July 1927.

The flag of Alaska was the result of a 1926 competition spearheaded by Alaska’s territorial governor at the time, George Parks, where Alaskan children between grades seven and twelve submitted designs to be judged.

The winning design came from young Benny Benson, thirteen years of age at the time, who lived with his brother Carl, at an orphanage in Seward, Alaska. Known as the Jesse Lee home, it housed hundreds of Aleut orphans and had originally been located at Unalaska before moving to larger premises in Seward.

In addition to seeing his design chosen, the young orphan also received a scholarship to the tune of $1,000 as well as a watch featuring the flag when it was hoisted for the first time on 9 July 1927. Benny’s design is still in use today. The flag features a dark blue background symbolizing Alaska’s night sky with eight stars representing the Big Dipper and the North Star, signifying Alaska’s northerly location.

Native Plants in Alaska

Alaska is home to the Sitka spruce, the largest species of spruce in the world

Alaska is home to national forests, national parks and wildlife refuges. With forget-me-not as the official state flower, the “Last Frontier” has a thriving environment for plants, ranging from fireweed to western columbines.

The state is also home to several tree species which vary depending on the prevailing climate of each region. Birch trees (Betula neoalaskana) can be found further into the state with their papery bark, which can be gray, red, white, or yellow.

The interior of the state is also home to white spruce (Picea glauca), and black spruce (Picea mariana) trees. The western hemlock (Tsuga heterophylla), the largest species of hemlock, capable of growing to impressive heights can also be found in the southern parts of the state. One of the largest conifer species and the world’s largest spruce, the Sitka spruce (Picea sitchensis) can also be found in southern Alaska.

Discover other interesting facts about native plants in Alaska.

Read about:

  • extinct animals that lived in Alaska.
  • the best national parks in Alaska.
  • the coldest place in Alaska.
  • the largest lake trout ever caught in Alaska.
  • the longest biking trail in Alaska.
  • the best dog parks in Anchorage, Alaska.
  • the best fish to catch in Alaska in the summer.

Animals Found in Alaska

135 species documented in our encyclopedia

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