Male dolphins spotted donning sea-sponge wigs to attract females
www.abc.net.au
Scientists observe male humpback dolphins parading sea sponges on their heads to impress females off Western Australia's northern coast.

Are these hipster dolphins?

Further south in Shark Bay, Indo-Pacific bottlenose dolphins use sponges to flush fish out from the coral. They carry a sea sponge on their rostrum or snout to dig around in the seabed to stop their face getting cut up on the rocks and coral.