This keychain depicts the enigmatic hammerhead shark! The hammerheads, a widespread group which includes 11 recognized species in the genus Sphyrna, are among the most instantly recognizable creatures in the sea. The hammer shape of its head, or cephalofoil, gives this shark an air of mystery which has fascinated and beguiled mariners since time immemorial, and now you can carry a totem of this remarkable animal with you wherever you go! Dimensions (not including keyring): 6.3 cm long (including loop) X 2.1 cm wide X 1.9 cm high Weight: 18.0 Grams