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 and killer whales.
Sharks and killer whales, eat dolphins!
I'm not sure but it could be dolphins or stingrays...
Certain species of shark, and killer whales eat dolphins.
Sharks have been reported to be scared of dolphins, as well as any small fish or animal a dolphin normally eats.
sharks eat dolphins
Dolphins feed mostly on fish and squid.
killer whales, sharks and humans eat dolphins.
sharks eat pink river dolphins