Video released by the US-based NGO Beneath The Waves shows one orca holding the tail of a sunfish, with its fellow whale then charging with full force into the rotund mola, which explodes into pieces.

The ramming behavior might help younger orcas more easily digest their food, while also allowing other orcas to have a little fun, researchers say.

Scientists believe sunfish-smashing behaviour could be form of entertainment or to help younger whales feed