Highlight from 'The Book of Humans' by Last accessed on

Bottlenose dolphins in Shark Bay hurdle sea sponges onto their beaks. Around three-fifths of dolphins are spongers in this area, and researchers think that they are doing this to protect their beaks—more technically, the rostrum—while foraging for sea urchins, crabs and other spiky bottom-dwellers that hide in the craggy seabed. They specifically select cone-shaped sponges too, which presumably sit more comfortably and securely on their beaks. One animal uses a second to eat a third.