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  2. Grey reef shark - Wikipedia

    en.wikipedia.org/wiki/Grey_reef_shark

    The grey reef shark or gray reef shark (Carcharhinus amblyrhynchos, sometimes misspelled amblyrhynchus or amblyrhinchos) [2] is a species of requiem shark, in the family Carcharhinidae. One of the most common reef sharks in the Indo-Pacific , it is found as far east as Easter Island and as far west as South Africa .

  3. Shark tooth - Wikipedia

    en.wikipedia.org/wiki/Shark_tooth

    Otodus megalodon teeth are the largest of any shark, extinct or living, and are among the most sought after types of shark teeth in the world. This shark lived during the late Oligocene epoch and Neogene period, about 28 to 1.5 million years ago, and ranged to a maximum length of 60 ft. [ 13 ] The smallest teeth are only 1.2 cm (0.5 in) in ...

  4. Requiem shark - Wikipedia

    en.wikipedia.org/wiki/Requiem_shark

    The common name requiem shark may be related to the French word for shark, requin, which is itself of disputed etymology.One derivation of the latter is from Latin requiem ("rest"), which would thereby create a cyclic etymology (requiem-requin-requiem), but other sources derive it from the Old French verb reschignier ("to grimace while baring teeth").

  5. Carcharhinus - Wikipedia

    en.wikipedia.org/wiki/Carcharhinus

    Grey reef shark: Carcharhinus amblyrhynchos (Bleeker, 1856) Endangered Mostly less than 1.9 m (6.2 ft) maximum 2.6 m (8.5 ft) Pigeye shark: Carcharhinus amboinensis

  6. Reef shark - Wikipedia

    en.wikipedia.org/wiki/Reef_shark

    This article lists several species of reef-associated sharks which are known by the common name reef sharks. In the Indian and Pacific Oceans: Blacktip reef shark; Grey reef shark; Whitetip reef shark; In the Atlantic and Pacific Oceans: Galapagos shark; In the Atlantic Ocean: Caribbean reef shark

  7. Caribbean reef shark - Wikipedia

    en.wikipedia.org/wiki/Caribbean_reef_shark

    If threatened, Caribbean reef sharks sometimes perform a threat display, in which they swim in a short, jerky fashion with frequent changes in direction and repeated, brief (1–1.2 second duration) drops of the pectoral fins. This display is less pronounced than the better-known display of the grey reef shark (C. amblyrhynchos). [8] [9]

  8. Shark anatomy - Wikipedia

    en.wikipedia.org/wiki/Shark_anatomy

    This grey reef shark demonstrates countershading, with its darker dorsal surface and lighter ventral surface. Sharks may have a combination of colors on the surface of their body that results in the camouflage technique called countershading. A darker color on the upper side and lighter color on the underside of the body helps prevent visual ...

  9. Galapagos shark - Wikipedia

    en.wikipedia.org/wiki/Galapagos_shark

    The Galapagos shark can be distinguished from the dusky shark in having taller first and second dorsal fins and larger teeth, and it can be distinguished from the grey reef shark in having a less robust body and less pointed first dorsal fin tip. However, these characters can be difficult to discern in the field.