Reef sharks play critical ecological roles in coral reef ecosystems. Overfishing and finning threaten their welfare and survival, while poorly regulated shark diving creates additional pressures.
Shark welfare is a frontier in conservation ethics. The capacity of sharks to suffer is now supported by research demonstrating nociception and stress responses — the image of sharks as unfeeling predators has given way to a more nuanced understanding of their biology. Finning causes extreme, prolonged suffering: a finned shark sinks helplessly to the seafloor, unable to swim, where it drowns slowly over hours. Bycatch entanglement in longlines and gill nets causes distress and often fatal injury. Even catch-and-release recreational fishing causes significant physiological stress that can be fatal for some shark species. Shark welfare and conservation are deeply linked — protecting reef shark populations protects individual welfare at scale. Fully protected marine reserves where fishing is prohibited provide the most effective combined welfare and conservation outcomes.