Whale shark with injury to the dorsal fin, likely to be caused by collision with a vessel. Credit: Gonzalo Araujo ...

Captive whales don't have enough space to reach these speeds. Ultimately, the curved dorsal fin is still a mystery. Curved, or not, the orca's giant fin is a beacon to all, this apex predator is a ...

White whales are smallish, ranging from 13 to 20 feet in length. They have rounded foreheads and no dorsal fin. These whales are common in the Arctic Ocean's coastal waters, though they are found ...