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One of the few sharks to exhibit parental care, female horn sharks in the wild pick up their eggs in their mouths and wedge them into crevices. [3] However, in captivity the eggs are simply dropped on the bottom and may later be cannibalized. [2] The eggs hatch in 6–10 months; at emergence the young measure 15–17 cm (5.9–6.7 in) long. [1]
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Off KwaZulu-Natal, the decimation of large sharks by the use of gillnets to protect beaches has led to a recent increase in milk shark numbers. [17] A known parasite of this species is the copepod Pseudopandarus australis. [18] There is some evidence that male and female milk sharks segregate from each other. [14]
Thresher sharks are solitary creatures that keep to themselves. It is known that thresher populations of the Indian Ocean are separated by depth and space according to sex. Some species however do occasionally hunt in a group of two or three contrary to their solitary nature. All species are noted for their highly migratory or oceanodromous habits.
The broadnose sevengill shark (Notorynchus cepedianus) is the only extant member of the genus Notorynchus, in the family Hexanchidae.It is recognizable because of its seven gill slits, while most shark species have five gill slits, with the exception of the members of the order Hexanchiformes and the sixgill sawshark.
The entire body of a shark is a very efficient eating machine. Each organ has been fine-tuned for hunting and acquiring food. Skip to main content. 24/7 Help. For premium support please call: 800 ...
Gulper sharks can have long resting periods between pregnancies. [2] They are ovoviviparous, meaning the only parental care they give their young is during the incubation period. [5] Since not all oocytes form into pups, when a pup or two is formed inside the female, they eat the remaining fertilized eggs, known as oophagy. [2]
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