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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 10 subcategories, out of 10 total.
Pages in category "Sharks"
The following 60 pages are in this category, out of 60 total. This list may not reflect recent changes (learn more).
- Shark anatomy
- Shark attacks in South Australia
- Shark baiting
- Shark Bay (Sea World)
- Shark cartilage
- Shark liver oil
- Shark meat
- 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