thresher shark


Also found in: Dictionary, Thesaurus, Wikipedia.

thresher shark,

long-tailed, warm-water shark, genus Alopias. The upper fork of its tail is slender and sickle-shaped and is about equal in length to the rest of the body. This shark uses its tail strike and stun the small schooling fish on which it feeds; the tail also is flailed from side to side to sweep prey in front of the shark. The thresher also slaps the water with its tail to frighten its prey. Threshers are found chiefly in offshore, tropical waters, but are also known in temperate regions. The common thresher, A. vulpinus, is widely distributed throughout the Atlantic and the E Pacific; it is common off the New England coast in summer and is fished commercially on the S California coast. It may reach a length of 20 ft (6.2 m) and weigh 1,000 lb (450 kg). A second species, A. pelagicus, is found in the W Pacific. The big-eyed thresher, A. superciliosus, is a deep-sea fish of the tropical and subtropical Atlantic. It is smaller than the common thresher, but its eyes may measure 4 in. (10 cm) in diameter. Thresher sharks are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information.
, subphylum Vertebrata, class Chondrichthyes, order Selachii, family Alopiidae.

thresher shark

[′thresh·ər ‚shärk]
(vertebrate zoology)
Common name for fishes in the family Alopiidae; pelagic predacious sharks of generally wide distribution that have an extremely long, whiplike tail with which they thrash the water, destroying schools of small fishes.
Mentioned in ?
References in periodicals archive ?
Age and growth of the common thresher shark in the western North Atlantic Ocean.
The skipper, who has been fishing around England and Wales for 25 years, is expecting to see many more thresher sharks off the coast of Milford Haven, as commercial fishing of porbeagle sharks has been stopped.
Thresher sharks are usually solitary creatures who keep themselves to themselves, and can be seen jumping out of the water like a dolphin.
London, July 11 ( ANI ): Thresher sharks resort to sharp overhead "tail slaps" to stun or kill several of the smaller fish at once, a study has revealed.
In 2007 a trawler fisherman caught a 16ft thresher shark off the coast off Land's End, Cornwall.
That shark was worth nearly $1,000, Phillips said as the classroom's teacher shuffled around the room with a laptop, showing students a picture of a thresher shark.
JUST when you thought you could get back into the sea after the huge Thresher shark was landed off Filey last week, a Great White Shark has allegedly been spotted off Cornwall.
ORDER FAMILY COMMON NAME Squaliformes Squalidae Angel shark Squaliformes Pristiophoridae Sawshark Squaliformes Squalidae Spurdog Hexanchiformes Hexanchidae Cow shark Lamniformes Carcharinidae Blue shark Lamniformes Carcharinidae Tiger shark Lamniformes Scyliorhinidae Dogfish shark Lamniformes Sphyrnidae Hammerhead shark Lamniformes Cetorhinidae Basking shark Lamniformes Lamnidae Great white shark Lamniformes Lamnidae Mako shark Lamniformes Alopiidae Thresher shark Lamniformes Rhincodontidae Whale shark Heterodontiformes Heterodontidae Bullhead shark ORDER LATIN NAME SIZE Squaliformes Squatina squatina 1-2 m Squaliformes Pristiophorus nudipinnus 1.
A thresher shark (see next page) has an upper tail lobe that's as long as its body.
The inclusion of thresher sharks in Appendix II is particularly significant as the Philippines is the only country in the world that has an established thresher shark diving industry in Malapascua, Cebu.
Fisherman Martin King, 62, added: "It's looks to me like the dolphin was bitten by either a thresher shark or a porbeagle shark.