Portal:Sharks
From Infogalactic: the planetary knowledge core
Sharks (superorder Selachimorpha) are a group of fish species with a full cartilaginous skeleton. There are over 400 extant species of shark, as well as numerous extinct species known from recovered teeth and bones. Due partially to fear of shark attack, sharks often feature heavily in popular culture. Template:/box-footer
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The crocodile shark, Pseudocarcharias kamoharai, is a species of shark found worldwide in tropical waters. It is the only member of the family Pseudocarcharidae. The crocodile shark is the smallest living mackerel shark, measuring only 1 m (3 ft) long, and can be distinguished by its elongated body, extremely large eyes, and relatively small fins. It is a specialized inhabitant of the open ocean, feeding on pelagic fishes and invertebrates. The size and structure of its eyes indicates that it is adapted for hunting at night. The crocodile shark is ovoviviparous and typically gives birth to litters of four. The fetuses are oophagous, meaning that they feed on eggs produced by the mother. Due to its small size, the crocodile shark is of little commercial importance. However, it is caught in substantial numbers as bycatch, leading it to be assessed as Near Threatened by the World Conservation Union. This species was responsible for damaging deep sea fiberoptic cables when the technology was first deployed in 1985.
WikiProjects related to sharks:
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- ... that the spadenose shark exhibits the most advanced form of placental reproduction in fishes?
- ... that the dark, puffadder, brown, and Natal shysharks of South Africa are so named because they curl into a ring when threatened and "shyly" cover their eyes with their tails?
- ... that the daggernose shark can adjust the timing of events in its reproductive cycle by several months?
- ... that the lollipop catshark is shaped like a tadpole and has an almost gelatinous body?
- ... that the Australian swellshark can survive out of water for more than a day?
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