Pectoral Slapping Print
Humpback whales have huge mottled white flippers, roughly one third the length of their body. No other type of whale has larger flippers. Humpbacks will sometimes hold one flipper high out of the water before slapping it on to the surface of the water, making a loud noise. Sometimes they do this on their backs, alternating hitting the water with the pectoral fins from either side. It seems as if the whales are communicating to other nearby whales when they do this.