sharks do feed off of dolphins and so do killer whales but a killer whale is a species of dolphin. If we are talking about killer whales the killer whale is an apex predator and eats sharks !
Sharks, killer whales, pygmy killer whales, and pilot whales eat spinner dolphins.
the killer whale (orca whales) and humans
Sharks, and killer whales
Killer whales/orcas eat sperm whale calves.A killer whale eats a sperm whalesome other whales like theo orca whale eats or can mostly attack the sperm whalethe only marine animal that can eat a sperm whale is a giant squid.
killer whales (orca)
Killer Whales eat Swordfish
Polar Bears and Killer Whales
killer whales
killer whales and sea lions
Killer whales.
Mainly sharks, maybe other killer whales, as they have been known to feed on dead sea mammals.