A killer whale, electric eel, pods of dolphins and also sharks are cannibals which means the eat each other. But it depends on which shark and their size like the great white's size is massive and others that are smaller like the port jackson shark. Hope that helped. ;)
Perhaps the best known creature that dines on sharks' eyes is a strange, 3-centimetre-long, pinkish-white copepod known as Ommatokoita elongata, which permanently attaches itself to the corneas and associated tissues of the Greenland Shark (Somniosus microcephalus). You can find gorgeous photographs of this creature attached to the eyes of free-swimming Greenland Sharks in the September 1998 issue of National Geographicmagazine (pages 60-71).
Sharks
Orcas, and many other larger sharks
They are prey to hammerhead sharks and killer whales.
star fish,sharks, barracudas, and some eels
well, there is the problem of sharks eating families
sharks and sting rays are very fast in the sea which help them to attack and kill their prey.
Sharks, sea animals and your mom
The dumbo octupus enemies are any sea water animal that will attack for food.
Fish,Prawns,Crabs,Sea-horse,Sea-lion,Sea-cow,Seal, Dolphins,Sharks,Manatee
seagulls eat fish, but hawks eat seagulls.
A animal that is big enough to take care of food
seals, leopard sharks and small microscopic animal, starfish