Although there has only been a total of 53 confirmed sightings of the Megamouth shark, this species is now known to be found in the Indian, Pacific and Atlantic Oceans. As with the two other known filter-feeding sharks, the basking shark and the whale shark, this species has a widespread distribution. However, the megamouth shark is less active, and a poorer swimmer than the basking shark and the whale shark. Its slow movement is probably because of its fleshy body, soft fins, and asymmetrical tail.