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The lemon shark was first named and described in 1868 by Felipe Poey. [7] He originally named it Hypoprion brevirostris, but later renamed it Negaprion brevirostris. [7] The lemon shark has also appeared in literature as Negaprion fronto and Carcharias fronto (Jordan and Gilbert, 1882), Carcharias brevirostris (Gunther, 1870), and Carcharhinus brevirostris (Henshall, 1891).
It contains the two extant species of lemon sharks: the lemon shark (N. brevirostris) of the Americas, and the sicklefin lemon shark (N. acutidens) of the Indo-Pacific. Both species are large, slow-moving, bulky sharks inhabiting shallow coastal waters, and can be identified by their short, blunt snouts, two dorsal fins of nearly equal size ...
The sicklefin lemon shark usually swims close to the bottom. Courtship behavior - a male (right) follows a female. A sluggish species, the sicklefin lemon shark is usually seen cruising sedately just above the sea bottom or lying still on it, as unlike most requiem sharks, it is capable of actively pumping water over its gills.
Ground sharks, like this blacknose shark, have a nictitating membrane which can be drawn over the eye to protect it. Carcharhiniformes / k ɑːr k ə ˈ r aɪ n ɪ f ɔːr m iː z /, commonly known as ground sharks, are the largest order of sharks, with over 270 species. They include a number of common types, such as catsharks, swellsharks, and ...
Passive electroreception using ampullae is an ancestral trait in the vertebrates, meaning that it was present in their last common ancestor. [7] Ampullae of Lorenzini are present in cartilaginous fishes (sharks, rays, and chimaeras), lungfishes, bichirs, coelacanths, sturgeons, paddlefishes, aquatic salamanders, and caecilians.
The great hammerhead shark’s scientific name is Sphyrna mokarran, a mixture of Greek and Arabic meaning “great hammer.” A German naturalist explorer Wilhelm Peter Eduard Simon Rüppell first ...
Florida photographer Paul Dabill often sees sharks when he films, but the water being particularly “calm and clear” helped produce "stunning" video.
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