Whale shark

The whale shark is found in tropical and warm temperate seas worldwide. It is considered the largest fish in the world. Despite the name, it is a shark not a whale. The largest individual that was accurately measured was 40 feet 7 inches long. There is a report in 1925 of a 60-foot whale shark, but it is undocumented.
This shark is not a threat to people because it feeds only on plankton, small fish and squid, which it filters from the water through its gills.