The world's largest fish is the whale shark (Rhincodon typus). The whale shark holds the title for both the largest extant fish species and the largest non-cetacean animal in the world. It can reach lengths of up to 18 to 40 feet (5.5 to 12 meters) and weigh several tons.
Despite its massive size, the whale shark is a gentle giant that poses no threat to humans. It is a filter feeder, primarily consuming plankton, small fish, and other tiny organisms by filtering them through its wide mouth while swimming. Whale sharks can be found in tropical and warm-temperate seas around the globe, often congregating in areas rich in food resources.
Conservation efforts are underway to protect whale sharks due to their vulnerable status. They are listed as a vulnerable species by the International Union for Conservation of Nature (IUCN). Laws and regulations are in place to prevent overfishing and protect their habitats in many countries where they occur.