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Unprocessed shark meat may have a strong odor of ammonia, due to the high urea content that develops as the fish decomposes. [6] The urea content and ammonia odor can be reduced by marinating the meat in liquids such as lemon juice, vinegar, milk, or saltwater. [7]
Two marine biologists share 10 shark facts for kids, as well as why shark attacks happen and why sharks are essential to human survival.
The common name refers to its distinctive, thresher-like tail or caudal fin which can be as long as the body of the shark itself. Cetorhinidae: Basking sharks: 1 1 The basking shark is the second largest living fish, after the whale shark, and the second of three plankton-eating sharks, the other two being the whale shark and megamouth shark.
The species is typically solitary, though they may gather in large numbers at food concentrations. Bony fish and cephalopods are the main components of its diet and females give live birth. Though slow-moving, the shark is opportunistic and aggressive, and is reputed to be dangerous to shipwreck survivors.
Salmon sharks get their name from their diet, which primarily consists of salmon. It is known for its ability to maintain stomach temperature (homeothermy), [4] which is unusual among fish. This shark has not been demonstrated to maintain a constant body temperature.
A planktivore is an aquatic organism that feeds on planktonic food, including zooplankton and phytoplankton. [1] [2] Planktivorous organisms encompass a range of some of the planet's smallest to largest multicellular animals in both the present day and in the past billion years; basking sharks and copepods are just two examples of giant and microscopic organisms that feed upon plankton.
Guitarfish have a body form intermediate between those of sharks and rays. The tail has a typical shark-like form, but in many species, the head has a triangular, or guitar-like shape, rather than the disc-shape formed by fusion with the pectoral fins found in other rays.
The shark's momentum at the end of these spiraling runs often carries it into the air, giving it its common name. [2] [12] The blacktip shark also performs this behavior, though not as often. [3] Off Madagascar, spinner sharks follow migrating schools of mackerel, tunas, and jacks.