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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]
Greenland sharks have also been found with remains of moose, polar bear, horse, and reindeer (in one case an entire reindeer body) in their stomachs. [26] [27] [28] The Greenland shark is known to be a scavenger and is attracted by the smell of rotting meat in the water. The sharks have frequently been observed gathering around fishing boats. [26]
Sharks and other cartilaginous fish (skates and rays) have skeletons made of cartilage and connective tissue. Cartilage is flexible and durable, yet is about half the normal density of bone. This reduces the skeleton's weight, saving energy. [29] Because sharks do not have rib cages, they can easily be crushed under their own weight on land. [30]
Shortfin mako sharks over 3 m (9.8 ft) have interior teeth considerably wider and flatter than smaller mako, which enables them to prey effectively upon dolphins, swordfish, and other sharks. [21] An amateur videotape, taken in Pacific waters, shows a moribund pantropical spotted dolphin whose tail was almost completely severed being circled by ...
Smaller sharks eat proportionately more cephalopods and crustaceans, switching to fish as they grow older. [ 10 ] [ 16 ] Many predators feed on the milk shark, including larger sharks such as the blacktip shark ( Carcharhinus limbatus ) and Australian blacktip shark ( Carcharhinus tilstoni ), and possibly also marine mammals . [ 15 ]
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The average length of maturity for sharks averages in the greater equatorial and southwestern Atlantic is 170 cm (67 in) for females and 170–190 cm (67–75 in) for males. [19] In the Pacific, sharks appear to mature at four to five years. [17] One oceanic whitetip shark was estimated to have lived 22 years. [5] [20]
Alternately, analysis based on dentition suggests that the closest relatives of the crocodile shark are the thresher sharks, followed by the mackerel sharks. [5] Fossil Pseudocarcharias teeth dating to the Serravallian age (13.6–11.6 Ma) of the Miocene epoch have been found in Italy, and are identical to those of the modern-day crocodile ...