Porpoise dolphins are the same things as porpoise so the answer is, mainly fish. Also, squid and crustaceans.
Actually, technically yes. The Killer whale is the largest member of the dolphin family, and it has the potential to eat other dolphins.
If your talking about one species eating another...no Two different species eating oneanother yes that can happen
Dolphins eat cod, herring, and mackerel. Sharks eat dolphins.
Well, .........you know some food like shrimp, jellyfish, lobster and you get the point right?
Dolphins consume a variety of prey including fish, squid and crustaceans.Dolphins live in all oceans of the planet and even in some important rivers.