Well there are 9 different species of Hammerhead Sharks :
Winghead shark
Scalloped bonnethead
White fin hammerhead
Scalloped hammerhead
Scoophead
Great hammerhead
Bonnethead
Smalleye hammerhead
Smooth hammerhead
The Great and the Scalloped hammerhead are listed on the World
Conservation Union's 2008 Red List as endangered, whereas the
Smalleye hammerhead is listed as vulnerable. As for the other
species they are not endangered.