--the common bottlenose dolphin, usually found near the shore, or in relatively shallow continental waters
--the Rough Toothed Dolphin, a pelagic, which is to say, deep sea dolphin
--usually just called Orca, is also called the Killer Whale, although it is not a whale, but a dolphin. The biggest damned dolphin you'll ever meet, but a dolphin. It is also pelagic, and pods specialize in particular types of fish, or seals, or even other dolphins.