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Sharks constitute the superorder Selachimorpha in the subclass Elasmobranchii in the class Chondrichthyes. The Elasmobranchii also include rays and skates; the Chondrichthyes also include Chimaeras. It is currently thought that the sharks form a polyphyletic group: in particular, some sharks are more closely related to rays than they are to some other sharks.
Sharks are split into eight orders:
- Carcharhiniformes: ground sharks, the largest order of sharks, including requiem sharks, catsharks, swellsharks, houndsharks, weasel sharks and hammerheads
- Heterodontiformes: bullhead sharks
- Hexanchiformes: cow sharks and frilled sharks
- Lamniformes: mackerel sharks, including thresher sharks
- Orectolobiformes: carpetsharks
- Pristiophoriformes: sawsharks
- Squaliformes: bramble sharks, dogfish, sleeper sharks and lanternsharks
- Squatiniformes: angelsharks
Subcategories
This category has the following 12 subcategories, out of 12 total.
Pages in category "Sharks"
The following 40 pages are in this category, out of 40 total. This list may not reflect recent changes.
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- Shark agonistic display
- Shark anatomy
- Shark Angling Club of Great Britain
- Shark Bay (Sea World)
- Shark cage diving
- Shark cartilage
- Shark culling
- Shark liver oil
- Shark meat
- Shark sanctuary
- Shark Trust
- Shark Week
- Sharkbook
- Sharkdefense
- Outline of sharks
- Sharks in captivity
- Sharks in popular culture
- Spiral valve