The family of Odobenocetopsidae contains just a single genus: Odobenocetops. These extinct toothed whales are closely related to species like porpoises, narwhal and beluga. It shows an astonishing feeding adaption in which they probably fed on molluscs, sucking them out of the sea bottom and removed the shells with their powerful tongue. The tusks, on the other hand, probably didn’t play a role in their feeding behaviour and were potentially used by males for social competition.