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 ...

The killer whale which was recorded ... including developing the hallmark collapsed dorsal fin, he added. "I think we've got to wise up. The natural place for a whale or dolphin is in the wild." ...

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

They have large, rounded pectoral fins and a unique, variable gray or white “saddle patch” behind their large dorsal fin. While females are smaller ... participate in the care of young. Killer whales ...