Wildlife of
Maldives

Primary Threats

• Sea surface warming drives frequent mass coral bleaching across atolls, weakening reef structure that protects islands from waves and supports fisheries. Ocean acidification reduces coral calcification, slowing reef recovery. Sea-level rise and more energetic storms increase coastal erosion and saltwater intrusion, prompting shoreline hardening and land reclamation that can further degrade nearshore habitats.
• Solid waste and plastics accumulate rapidly due to high consumption and limited disposal capacity on small islands; leakage and illegal dumping contribute to marine debris impacting turtles, seabirds, and reef habitats. Sewage and greywater discharge from densely populated islands and resorts can elevate nutrient loads in lagoons, contributing to algal growth and localized reef stress. Legacy and ongoing waste management issues around disposal sites (notably the Thilafushi area) are a recurrent national concern.
• Coastal development, beach nourishment, dredging, and land reclamation for housing, airports, harbors, and resort infrastructure remove or smother corals and seagrass, alter currents, and reduce nursery habitat for fish. Because islands are small and reefs sit close to shore, even modest projects can have outsized impacts on lagoon ecology and shoreline stability.
• Fishing pressure can reduce reef fish biomass and alter food webs, which can impair reef resilience after bleaching. While the pole-and-line tuna fishery is relatively selective, localized reef-associated fishing, baitfish harvesting, and pressure on certain species can be significant near population centers and tourism hubs.
• High-intensity marine tourism (diving, snorkeling, boating) can cause direct coral breakage, anchor damage, and wildlife disturbance. Repeated close approaches to whale sharks and manta rays, crowding at cleaning stations, and unregulated vessel movements can change animal behavior and increase injury risk.
• Ports, breakwaters, causeways, airport expansions, and inter-island transport infrastructure often require dredging and reclamation, increasing turbidity and sedimentation that stress corals. Shoreline armoring can shift erosion to adjacent areas and reduce natural beach dynamics important for turtle nesting.
• Seawalls, groynes, and engineered shorelines-often installed to counter erosion and sea-level rise-modify wave energy and sediment transport, sometimes degrading adjacent reef flats and lagoons. Artificial beach creation and lagoon modification for resort aesthetics can simplify habitats and reduce ecological function.
• Sand and aggregate demand for construction can incentivize extraction or dredging that damages reef-associated habitats and increases turbidity. Freshwater resources are limited on small islands; reliance on desalination and groundwater lenses can create vulnerabilities and drive further infrastructure expansion with environmental footprints.
• Population concentration (especially around Malé and surrounding islands) intensifies coastal squeeze, waste generation, wastewater discharge, and demand for land reclamation. This concentrates impacts in North/Kaafu atolls and other growth areas where nearshore ecosystems are already under pressure.
• Although large-scale trade is less prominent than in some regions, demand for marine curios and occasional illegal collection of protected species (e.g., shells, corals, shark/ray products) can occur, facilitated by tourism markets and transit links. Enforcement across dispersed islands remains challenging.