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Genus Echinorhinus T. N. Gill, 1862. Echinorhinus brucus (Bonnaterre, 1788) (bramble shark) Echinorhinus cookei Pietschmann, 1928 (prickly shark) Family Etmopteridae (lantern sharks) Genus Aculeola F. de Buen, 1959. Aculeola nigra F. de Buen, 1959 (hook-tooth dogfish) Genus Centroscyllium J. P. Müller & Henle, 1841.
Shark teeth are embedded in the gums rather than directly affixed to the jaw, and are constantly replaced throughout life. Multiple rows of replacement teeth grow in a groove on the inside of the jaw and steadily move forward in comparison to a conveyor belt; some sharks lose 30,000 or more teeth in their lifetime. The rate of tooth replacement ...
Bonnethead. The bonnethead ( Sphyrna tiburo ), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae. It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the ...
The Lamniformes ( / ˈlæmnɪfɔːrmiːz /, from Greek lamna "fish of prey") are an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae ). It includes some of the most familiar species of sharks, such as the great white, [1] as well as more unusual representatives, such as the goblin shark ...
Romento was attacked and killed while bodyboarding at 9:45 a.m. in shallow, clear water approximately 90 feet (27 m) from shore off Keʻeau Beach Park, Oahu, Hawaii. His right leg was severely bitten in three places by a 10–12-foot (3.0–3.7 m) tiger shark, and he died of blood loss a short time after swimming to shore.
The shark kidney excretes urea that is needed for the shark to have in its system so the shark does not become dehydrated from living in seawater. Sharks hearts have two chambers and the way the heart pumps. The shark heart's main importance is providing oxygenated blood to the entire body while filtering out the deoxygenated blood.
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