There are at least 40 known species of flying fish. Beyond their useful pectoral fins ... gliding long distances, up to 655 feet. Once it nears the surface again, it can flap its tail and taxi ...

Xiphactinus was one of the largest bony fish of the Late Cretaceous and is considered one of the fiercest creatures in the sea. A powerful tail and winglike pectoral fins shot the 17-foot-long (5 ...

These upright fish have a dorsal fin that flutters 30 to 70 times ... But seahorses are not strong swimmers. Instead of tail (caudal) fins, seahorses have long prehensile tails to anchor themselves by ...