Ocean Sunfish (Mola mola)

The heaviest bony fish, shaped like a swimming head/Marine Life

The ocean sunfish (Mola mola) is the heaviest known bony fish in the world, with adults reaching up to 2.7 meters in length, 3 meters from fin tip to fin tip, and weighing up to 2,300 kg. Its unusual truncated body makes it look like a giant swimming head. Despite its size, it feeds mainly on jellyfish and must consume huge quantities to survive. A female can produce up to 300 million eggs at once, more than any other known vertebrate. Mola mola regularly bask at the ocean surface, where seabirds pick parasites off their skin.