any of several whales having simple conical teeth and feeding on fish etc.

dolphins

black-and-white dolphin that leaps high out of the water

any of several dolphins with rounded forehead and well-developed beak; chiefly of northern Atlantic and Mediterranean

any of several small gregarious cetacean mammals having a blunt snout and many teeth

slaty-grey blunt-nosed dolphin common in northern seas

predatory black-and-white toothed whale with large dorsal fin; common in cold seas

dolphins