Elasmobranchii

Radiation of elasmobranchs, based on Michael Benton, 2005.[6]

Elasmobranchs lack swim bladders, and maintain buoyancy with oil that they store in their livers. Some deep sea sharks are targeted by fisheries for this liver oil, including the school, gulper and basking shark (pictured). All three of these species have been assessed by the IUCN as vulnerable due to overfishing.

单词	Elasmobranchian
释义	Elasmobranchian 英语百科 Elasmobranchii Elasmobranchs lack swim bladders, and maintain buoyancy with oil that they store in their livers. Some deep sea sharks are targeted by fisheries for this liver oil, including the school, gulper and basking shark (pictured). All three of these species have been assessed by the IUCN as vulnerable due to overfishing.
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Elasmobranchian

Elasmobranchii