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Have You Herd About Ghost Sharks? (Chimaera)
Manage episode 355227642 series 3415628
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Chimaeras also known as Ghost Sharks live in temperate ocean floors down to 2,600 m (8,500 ft) deep, with few occurring at depths shallower than 200 m (660 ft). Exceptions include the members of the genus Callorhinchus, the rabbit fish and the spotted ratfish, which locally or periodically can be found at shallower depths. Consequently, these are also among the few species from the chimaera order kept in public aquaria.[4] They live in all the oceans except for the Arctic and Antarctic oceans.
They have elongated, soft bodies, with a bulky head and a single gill-opening. They grow up to 150 cm (4.9 ft) in length, although this includes the lengthy tail found in some species. In many species, the snout is modified into an elongated sensory organ.[5]
Like other members of the class Chondrichthyes, chimaera skeletons are composed of cartilage. Their skin is smooth and naked, lacking placoid scales (except in the claspers), and their color can range from black to brownish gray. For defense, most chimaeras have a venomous spine in front of the dorsal fin. They use these fins to "fly" through water.
The usual diet of chimaeras consist of crustaceans, and more specifically, they include ophiurans and molluscs.[6]
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