The ocean sunfish is the world's heaviest bony fish, not including stingrays or sharks. Mola molas can weigh up to 5,000 ...

A dramatic video captured off the coast of Cabo San Lucas, Mexico, shows a diver appearing tiny next to a massive ocean ...

Rarely found in the Southern Ocean, a 2.5-metre sunfish washed up on WA's Lowlands Beach between Denmark and Albany could be a sign of a warm current moving south, a marine ecologist says.

No deep-sea adventure is complete without an unusually enormous fish sighting. Luis Miguel Gutierrez Bringas, a sea-diving tour operator, recently captured video of a massive and seemingly ...