Humpback whales

Megaptera novaeangliae

Port St. Johns, Eastern Cape, South Africa

Fuji S2 Digital, Nikon 80 - 400 VR

As they swim, humpbacks frequently arch their backs out of the water - presumably the origin of their name.

The shape of the dorsal (back) fin as well as the shape and color patterns on the dorsal (underside) surface of the flukes (tail) vary, making it possible for researchers to identify individual whales.