Whale sharks are classified as Endangered on the IUCN Red List, with their global population declining by at least 60% over the last three generations (roughly 120 years). That trend is still heading downward. But a wide range of conservation efforts, from national hunting bans to citizen science databases and fishing gear innovations, are working to reverse it. Here’s what’s actually happening on the ground and in the water.
International Protections and Hunting Bans
The most fundamental layer of protection is legal. Whale sharks are listed under the Convention on International Trade in Endangered Species (CITES), which restricts cross-border trade in their fins, meat, and oil. They’re also protected under the Convention on Migratory Species, which encourages coordinated conservation across the many countries whale sharks pass through during their long ocean migrations.
At the national level, dozens of countries have enacted outright bans on hunting or commercially fishing whale sharks. India banned whale shark fishing in 2001. The Philippines, Taiwan, and the Maldives followed with similar protections. Mozambique banned all commercial fishing of whale sharks, manta rays, and related species in 2021. These bans matter because whale sharks were historically targeted for their fins (which fetch high prices in the shark fin trade), their meat, and their liver oil. Closing those markets country by country has removed a major source of mortality.
Marine Protected Areas
Several countries have created marine sanctuaries specifically designed around whale shark aggregation sites. Mexico’s Tiburón Ballena Biosphere Reserve, off the northern Yucatán Peninsula, was established to protect one of the world’s largest seasonal gatherings of whale sharks. Visitors to the reserve must follow strict rules: no plastics, no drones, no feeding wildlife, no removing shells or marine life, and only reef-safe sunscreen. All tour operators must be officially authorized.
Similar protected zones exist at other major aggregation sites, including Ningaloo Reef in Western Australia, Oslob and Donsol in the Philippines, and the South Ari Atoll in the Maldives. These areas typically combine seasonal access restrictions, limits on the number of boats allowed near whale sharks at any time, and mandatory distancing rules for swimmers. The details vary by location, but the principle is the same: create a buffer between human activity and the animals at the places where they’re most concentrated and vulnerable.
Reducing Bycatch in Commercial Fisheries
Whale sharks aren’t always killed intentionally. Industrial tuna fisheries using purse-seine nets (massive curtains of netting that encircle schools of fish) sometimes accidentally trap whale sharks along with their target catch. This bycatch is a significant and ongoing threat, especially in tropical waters where tuna and whale shark habitats overlap.
To address this, the International Seafood Sustainability Foundation has been working with tuna fishers to test shark release ramps. These are physical ramps built into the vessel that allow accidentally caught sharks, including whale sharks, silky sharks, and hammerheads, to be guided back into the ocean alive rather than dying on deck. The technology is still being refined, but it represents a practical shift: rather than relying solely on fishers to avoid whale sharks entirely, it gives them a tool to minimize harm when encounters do happen.
Tracking Individuals Through Citizen Science
Every whale shark has a unique pattern of spots and stripes on its skin, similar to a human fingerprint. A global database called Wildbook for Whale Sharks uses these patterns to identify and track individual animals over time. Anyone, from marine biologists to vacation snorkelers, can upload a photo of a whale shark’s skin to the platform, where pattern-recognition software matches it against existing records.
The database currently holds over 50,000 photos submitted by more than 4,800 people and 100-plus researchers across 46 countries. This data reveals where individual whale sharks travel, how often they return to the same sites, and whether populations at specific locations are growing or shrinking. It’s one of the largest wildlife monitoring projects in the world that depends on everyday people contributing data, and it gives scientists a far more detailed picture of whale shark movements than satellite tagging alone could provide.
Regulating Tourism
Whale shark tourism is a double-edged sword. It generates millions of dollars annually for coastal communities, creating a powerful economic incentive to keep whale sharks alive. But poorly managed tourism can also harm the animals. Research in Donsol, Philippines found that touching whale sharks, using flash photography, and swimming directly toward them all triggered significant stress responses, including sudden dives, violent shuddering, and abrupt changes in direction.
Most major whale shark tourism sites now operate under formal codes of conduct. Common rules include a minimum distance swimmers must keep from the animal, a cap of six swimmers per whale shark at a time, one boat per shark, and prohibitions on flash photography and motorized water equipment. Compliance, however, is uneven. The same Donsol study found that while 99% of interactions complied with flash photography bans, only 44% of swimmers maintained the required minimum distance. Enforcement and guide training remain active challenges at tourism sites worldwide.
Turning Hunters Into Protectors
Some of the most effective conservation has come from changing relationships at the community level. Along India’s Saurashtra coastline, whale sharks were once routinely hunted or discarded as unwanted bycatch. Today, local fishers voluntarily protect them. Fishers who once saw whale sharks as a nuisance now cut their own nets to release trapped animals safely and report sighting locations to researchers. The International Fund for Animal Welfare describes these fishers as “conservation heroes,” and the program has become a model for community-based marine conservation.
This kind of transition, from extraction to stewardship, tends to stick when it’s paired with economic alternatives. In communities where whale shark tourism or paid monitoring work replaces the income that hunting once provided, conservation becomes self-sustaining. The animals are worth more alive, and the people closest to them become their most reliable guardians.
Why It All Matters
No single measure is enough to recover a species that has lost more than half its global population. What makes the current approach promising is the layering: legal bans remove the most direct threats, marine reserves protect critical habitat, bycatch innovations reduce accidental deaths, photo databases track population health, tourism regulations manage human contact, and community programs build local support. Each piece covers a gap the others can’t. The population is still declining, but the infrastructure to reverse that decline is more developed now than at any point in the species’ history.