Definition that contains dorsal fin
- killer predatory black-and-white toothed whale with large dorsal fin; common in cold seas
- grindle primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America
- orca predatory black-and-white toothed whale with large dorsal fin; common in cold seas
- sailfish large pelagic game fish having an elongated upper jaw and long dorsal fin that resembles a sail
- spearfish any of several large vigorous pelagic fishes resembling sailfishes but with first dorsal fin much reduced; worldwide but rare
- dogfish primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America
- razorback any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin
- grampus predatory black-and-white toothed whale with large dorsal fin; common in cold seas
- prickleback small elongate fishes of shallow northern seas; a long dorsal fin consists entirely of spines
- sea bass any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin