Unseen Video,Thresher shark Hunting the Prey | Rare Footage |

Thresher sharks are large lamniform sharks of the family Alopiidae found in all temperate and tropical oceans of the world; the family contains three extant species, all within the genus Alopias.

All three thresher shark species have been listed as vulnerable to extinction by the World Conservation Union since 2007 (IUCN).All are popular sport fish.[citation needed] In addition, they are hunted for their meat, livers (for shark liver oil), skin (for leather), and fins for use in shark-fin soup.

Thresher Shark jumping in Costa Rica
Thresher shark jumping in Costa Rica
They do not appear to be a threat to humans.

The genus and family name derive from the Greek word ἀλώπηξ, alṓpēx, meaning fox. As a result, the long-tailed or common thresher shark, Alopias vulpinus, is also known as the fox shark.The common name is derived from a distinctive, thresher-like tail or caudal fin which can be as long as the body of the shark itself.

The three extant thresher shark species are all in the genus Alopias. The possible existence of a hitherto unrecognized fourth species was revealed during the course of a 1995 allozyme analysis by Blaise Eitner. This species is apparently found in the eastern Pacific off Baja California, and has previously been misidentified as the bigeye thresher. So far, it is only known from muscle samples from one specimen, and no aspect of its morphology has been documented.