Whale sharks are the largest fish on Earth and popular ecotourism attractions. Managing the welfare impacts of tourist interaction while generating conservation value requires evidence-based guidelines.
Whale shark welfare in high-tourism areas is threatened by boat proximity, inadvertent strikes, touching by swimmers, and feeding behavior modification. Animals conditioned to human presence through feeding aggregations lose natural foraging behavior and become dependent on tourist-provided food. This creates welfare harm through nutritional inadequacy and removal from natural migration patterns. Well-managed interaction programs with strict distance and behavior guidelines minimize welfare costs while generating economic incentives for conservation. Poorly managed tourism causes chronic stress, behavioral modification, and injury.