Blue Sharks travel in schools and hunt together.  They feed on cephalopods such as octopi and squid.  They also eat small boney fish but prefer squid over all other prey.

Hammerhead sharks travel in large schools or packs and feed on one to five of some sort of prey.  Hammerheads usually prey on whales, dolphins and other porpoises.

Great White Sharks swim alone, hunt alone, and are left alone.  They usually feed on seals, whales, other sharks, porpoises, sea lions, and other fish.