The Top 10 Biggest Sharks in the World

Written by Heather Hall
Updated: January 24, 2023
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Key Points

  • Sharks, like other fish, have skeletons made of cartilage.
  • The tough skin of shark is attributed to teeth-like dermal denticles.
  • The largest shark in the world is actually one of the least dangerous.

What kind of shark is the largest shark in the world? When it comes to ocean predators, size matters. And sharks have a sizable corner of the market on that characteristic. While not all shark species are large, (the Dwarf Lantern, for example, is so small it can fit in a human’s palm) several species can pride themselves in being the largest fish in the sea. As we know, whales can definitely outsize sharks, but they are technically mammals. But what is the biggest shark in the world?

So what fish can even compete in size with sharks? For one, the giant oceanic manta ray can, measuring an average of 23 feet in width and weighing up to 3 tons. The largest bony fish is the Mola Mola, weighing up to 2.3 tons and averaging 10.8 feet in length. But there are four sharks we’ll look at in our top 10 list of the biggest sharks in the world that are all bigger than the aforementioned fish. Which is the largest shark in the world? Read on to find out.

Characteristics of the Biggest Sharks in the World

The human fascination with sharks stems from many of their characteristics. First and foremost, large, carnivorous sharks have been known to kill and eat people, which upends the usual situation of humans killing and eating fish. Another fascinating thing about these fish is that their skeletons are not made of bone, like those of other fish, but of cartilage. Since cartilage is lighter than bone, sharks tend to weigh less than a similar-sized animal with a bony skeleton.

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They have five to seven gill openings, and their pectoral fins are supported by pectoral girdles instead of being fused to their heads like other fish. Males also have claspers on each of their pelvic fins to help them fertilize the eggs of females internally. Sharks also lack a swim bladder. Many have huge, oil-filled livers or fill their stomachs with air to keep them buoyant. Since some of these animals need to keep moving lest they sink, they have evolved the ability to swim even as they sleep.

Another fascinating thing about sharks is their skin is made, basically, out of teeth called dermal denticles. This tough skin not only functions as a type of outside skeleton as the muscles that help them swim are attached to it but makes the fish more hydrodynamic as it swims. As for their real teeth, they evolved according to the prey the animal prefers, and they are always being replaced. Sharks can also grow to a huge size, as will be discussed. Despite all of these advantages, a lot of species are endangered thanks to the culling, overfishing, pollution, and climate change.

Without further delay, let’s delve into the top ten biggest sharks and answer the question–What is the largest shark in the world?

#10 Biggest Shark in the World: Longfin Mako

This creature, with disproportionately long pectoral fins, can grow to about 14 feet long. Its long fins make it a less agile swimmer than its relative, the shortfin mako shark. It eats fish, squid, octopus, and cuttlefish and might be able to raise its body temperature. Longfin mako babies hatch from eggs while they’re still inside their mother and she lets them eat unfertilized eggs while they’re still in the womb. Though longfin makos aren’t good eating and are not sought by commercial fishermen, they are still endangered. They’re found around the world in temperate and tropical seas.

#9 Biggest Shark in the World: Bluntnose Sixgill shark

Biggest Shark: Bluntnose Sixgill
Sixgill shark (Hexanchus griseus) seen while exploring Santa Rosa Reef, south of Guam, during the first dive of the Deepwater Exploration of the Marianas expedition.

©NOAA Ocean Explorer from USA – License

This shark, which is also found around the world in tropical and temperate seas, grows on average 15.8 feet long but has been known to grow as long as 20 feet. Also called the cow shark, it is found deep in the ocean and eats whatever it can tackle with its protruding jaws, including giant octopuses. As a Hexanchiform shark, it is a rather primitive animal, with a blunt head, small eyes that lack a protective nictitating membrane, and a single dorsal fin. The cow shark is not dangerous to humans unless it’s threatened, and its conservation status is near threatened.

#8 Biggest Shark in the World: Thresher shark

Biggest Shark: Thresher
A pelagic thresher shark, Alopias pelagicus, swims by a coral reef in the Philippines.

©Shane Gross/

One of the biggest sharks in the world, the thresher shark can grow to around 18.8 feet in length, and much of that length is taken up by its tail, which gives the animal its name and is used to stun its prey. There are three species, and the conservation status of all of them is vulnerable. Still, people hunt them for sport, for shark fin soup, for their meat, and for the oil found in their livers. Leather is even made out of their skin.

Thresher sharks are mainly found in the open ocean, even though now and then one venture close to the shore, especially if the shore is over a continental shelf. This means the shelves of the North Pacific around Asia and the North American continental shelves.

#7 Biggest Shark in the World: Great Hammerhead

Biggest Shark: Great Hammerhead
This shark’s unusual name comes from the unusual shape of its head, an amazing piece of anatomy built to maximize the fish’s ability to find its favorite meal: stingrays.


The great hammerhead shark is the biggest of the hammerheads and is critically endangered. Found in tropical and temperate waters worldwide, it is most likely found near the coast on continental shelves. It’s not only bigger than other hammerheads, but its hammer differs from theirs because it is almost straight across, and the first fin on its back or dorsal fin is tall and curved. Scientists believe that the fish developed its hammer, or cephalofoil to stun stingrays, which is its favorite meal.

The great hammerhead’s size, as much as 20 feet, makes it intimidating, but it rarely attacks humans. Unfortunately, the reverse isn’t true because its long fins are prized for shark fin soup.

Great hammerhead sharks are gravid for about 11 months, then they can give birth to as many as 55 pups. The edges of their hammers are rounder than those of the adults. If they survive to adulthood, great hammerheads can live as long as 50 years.

#6 Biggest Shark in the World: Great White shark

Biggest Shark: Great White
Underwater view of a great white shark during a cage diving trip at Guadalupe Island, Mexico. Although it is not the largest of all sharks, the great white is the largest predatory shark.


While its not the largest shark in the world, this huge carnivore, which typically grows to 20 feet in length and weighs two and a half tons, has a fearsome reputation. The reputation is deserved, for if someone is going to be attacked by a shark, it will most likely be a great white. Its conservation status is vulnerable, and it is protected in many areas.

The animal is rarely kept in aquaria because it is a migratory fish that’s used to swimming thousands of miles. It also has a diet that most aquaria can’t provide on a regular basis. This includes pinnipeds, porpoises, dolphins, sea turtles, seabirds, tuna, and other sharks. The great white also has no problem taking chunks out of larger whales.

The fish is found in waters all over the world save at the Poles, with concentrations around Japan, Oceania, Chile, the northeastern United States, and California, and the Mediterranean Sea. Groups seem to prefer to meet in the North Atlantic because of the eddies of warm water found there.

#5 Biggest Shark in the World: Greenland shark

Biggest Shark: Greenland
Greenland sharks aren’t adults until they’re around 150 years old, and they keep growing their whole lives at a rate of one centimeter a year.

©Dotted Yeti/

This 24 foot long fish is one of the longest-lived creatures on Earth. Biologists believe it can live as long as 500 years. It doesn’t even start to reproduce until it’s between 100 and 150 years old. Because it lives so long and reproduces so slowly, efforts are being made to protect this animal, whose conservation status is vulnerable.

The Greenland shark eats fish and squid found in the cold waters of the North Atlantic and the Arctic. The fish actually comes upon its prey while the prey is asleep and simply sucks it whole into its mouth. It has also been found with the remains of mammals in its stomach, but scientists believe this is from scavenging.

Because it has a lot of trimethylamine N-oxide, the flesh of the Greenland shark is poisonous to humans.

#4 Biggest Shark in the World: Tiger shark

Biggest Shark: Tiger
A lady diver with a Tiger Shark. Tiger sharks may be the only sharks that regularly hunt sea turtles.

©Tomas Kotouc/

The tiger shark, which can grow to 24.6 feet long, gets its name for the stripes found on its body and probably not for its ferocity. Still, only the great white has killed more humans. But is it the largest shark? Not quite.

The tiger shark is famous for eating anything it can get its impressive jaws around. It matters not if the object is edible. Edible prey include seals, squid, sea turtles, dolphins, fish, jellyfish, crustaceans, other sharks, and injured whales as large as humpbacks. It is found most often near the coast in warmer waters, and it prefers to stay close to the equator, though it’s been found as far north as Japan.

#3 Biggest Shark in the World: Megamouth

Biggest Shark: Megamouth
Megamouth shark, Megachasma pelagios, at Toba Aquarium, Japan

©Opencage / Creative Commons – License

The three biggest sharks in the world are plankton feeders and completely harmless to human beings. The “smallest” of these sharks is the megamouth at 25 feet in length. This fish lives in deep waters and is elusive, with a huge head, a flabby body, a thresher-like tail, and prominent lips. It’s been seen off Japan, Hawaii, and California and can dive to a depth of 3280 feet. Though its mouth is huge, its teeth are small and useless. It keeps its mouth open as it swims to pull in plankton and other small prey such as jellyfish.

#2 Biggest Shark in the World: Basking Shark

Biggest Shark: Basking Shark
A basking shark, Cetorhinus maximus, swimming near Coll Island, Scotland. The most impressive feature of the basking shark is its mouth, which opens up to 1 meter wide.

©Martin Prochazkacz/

At nearly 50 feet long, the basking shark comes in second as the largest shark in the world. It is found all over the world in temperate water and moves slowly, its mouth gaping to take in plankton. It gets its name because it’s often found feeding at the water’s surface, appearing to bask in the sunlight. It has hundreds of teeth, but they are small, curved, and don’t do much. The fish depends on its gill rakers to catch the plankton as it’s pulled into the mouth along with seawater. Unsurprisingly, gill rakers get worn out and are replaced and regrown continuously.

This animal has been overfished for its meat, its fins, its liver oil, and for animal food. Its conservation status is endangered. Basking sharks swim thousands of miles in the summer and winter in search of rich feeding grounds.

#1 Biggest Shark in the World: Whale Shark

Biggest Shark: Whale Shark
A whale shark swimming near an underwater reef. Each whale shark has its own unique pattern of spots, much like human fingerprints.

©weera bunnak/

What is the biggest shark in the world? The whale shark is not only the largest shark in the world at about 55.7 feet in length, but it is the biggest fish in the world. It is considered a carpet shark because of the beautiful pattern on its hide, which is dark gray with white stripes and what looks like polka dots. These animals also have two dorsal fins and five gill openings. They usually have small mouths. This doesn’t quite apply to the whale shark, though its mouth is smaller than that of the basking shark or megamouth. The whale shark simply opens its mouth and swims forward, which allows food and seawater to enter its mouth, or it sucks the prey in. This includes not only plankton but fish eggs, small fish, small squid, and krill. The fish has also been seen to cough to clear its throat of debris.

The whale shark has dermal denticles not only on its body but on its eyes. Like those on the body, they are there for protection. The animal can also retract its eyes completely into its body. It is found in warmer waters in the open ocean and near the coast and is endangered.

How Do Sharks Grow So Large?

Certain shark species are some of the largest fish in the sea. How do they get to be so large? Well, genetic predisposition definitely plays a role in many of these species, along with environment, food availability, competition, etc.

Summary: 10 Biggest Sharks in the World

1Whale shark>55 ft
2Basking shark50 ft
3Megamouth25 ft
4Tiger shark25 ft
5Greenland shark24 ft
6Great white shark20 ft
7Hammerhead shark20 ft
8Thresher shark>18 ft
9Bluntnose sixgill shark<20 ft
10Longfin mako shark14 ft

Up Next…

Sharks can grow to incredible sizes these days. They can also be extremely unique. Check out these articles on sharks, both past and present:

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About the Author

I am a freelance writer with 22 years of experience. I live in the Pacific Northwest and am surrounded by nature. When I go for my daily runs I often see herds of elk, deer, and bald eagles. I am owned by two dogs who take me on hikes in the mountains where we see coyotes, black bears, and wild turkeys.

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