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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
This category has the following 8 subcategories, out of 8 total.
Pages in category "Sharks"
The following 56 pages are in this category, out of 56 total. This list may not reflect recent changes (learn more).
- Shark anatomy
- Shark attacks in South Australia
- Shark baiting
- Shark barrier
- Shark Bay (Sea World)
- Shark cartilage
- Shark liver oil
- Shark net
- Shark proof cage
- Shark sanctuary
- Shark Shield
- Shark suit
- Shark threat display
- Shark Trust
- Shark Week
- Sharks in captivity
- Sharks in popular culture
- Spiral valve
- Summer of the Shark