Hammerhead sharks are a group of sharks in the family Sphyrnidae.  They are dark brown to light olive in color with a white underside.  They can grow up to 20 feet in length.  Hammerheads are found worldwide in warmer waters along coastlines and continental shelves. Unlike most sharks, hammerheads usually...

Hammerhead sharks are a group of sharks in the family Sphyrnidae.  They are dark brown to light olive in color with a white underside.  They can grow up to 20 feet in length.  Hammerheads are found worldwide in warmer waters along coastlines and continental shelves. Unlike most sharks, hammerheads usually swim in schools during the day, becoming solitary hunters at night.  Their unique hammer-shaped head is called a Cephalofoil. It is thought to aid in the sharks sensory reception and maneuvering.  The large shape of their head also is used for holding down their prey. Hammerhead sharks eat everything from fish, squid, octopus to crustaceans, stingrays and other sharks. The Great Hammerhead, tending to be larger and more aggressive than most hammerheads, occasionally engage in cannibalism, as they are known to eat other hammerhead sharks, including their own young.