Whale biologist Dave Johnson took this picture of a Commerson’s dolphin (Cephalorhynchus commersonii). This dolphin also goes by the names Skunk dolphin and the Piebald dolphin. Note it’s distinct black head, dorsal fin and flukes.
-Dena Seidel
For more information on the Commerson’s Dolphin, see: http://www.whale-web.com/dolphins/commerson.html