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Shark meat is a seafood consisting of the flesh of sharks. Several sharks are fished for human consumption, such as porbeagles, shortfin mako shark, requiem shark, and thresher shark, among others. [1] Shark meat is popular in Asia, where it is often consumed dried, smoked, or salted. [2]
Large numbers of milk sharks are caught commercially and sold as food. The milk shark is harmless to humans because of its small size and teeth. [ 15 ] Caught using longlines , gillnets , trawls , and hook-and-line, this shark is marketed fresh or dried and salted for human consumption, and is also used for shark fin soup and fishmeal .
When hunting schooling fish, thresher sharks are known to "whip" the water. [15] The elongated tail is used to swat smaller fish, stunning them before feeding. [ 17 ] Thresher sharks are one of the few shark species known to jump fully out of the water, using their elongated tail to propel them out of the water, making turns like dolphins ...
Like many sharks, this sevengill is counter-shaded. Its dorsal surface is silver-gray to brown in order to blend with the dark water and substrate when viewed from above. In counter to this, its ventral surface is very pale, blending with the sunlit water when viewed from below. The body and fins are covered in a scattering of small black ...
The tag relayed depth and time information over a two-day period. During the day, the shark swam at a depth around 120–160 m (390–520 ft), but as the sun set, it would ascend and spend the night at depths between 12 and 25 m (39 and 82 ft). Both day and night, its progress was very slow, around 1.5–2.1 km/h (0.81–1.13 kn).
The Port Jackson shark is a nocturnal species which peaks in activity during the late evening hours before midnight and decreases in activity before sunrise. [2] A study showed that captive and wild individuals displayed similar movement patterns and the sharks' movements were affected by time of day, sex, and sex-specific migrational behaviour.
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It is likely that most captured sharks survive to be returned to the water alive, as this species can tolerate being out of water for an extended period of time. From 1988 to 1991, there was a New Zealand shark liver fishery and reported catches of draughtsboard sharks were 74–540 tons per year. After the fishery was discontinued, catches ...