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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 .
Ibexes are effectively flattened by countershading, making them nearly invisible against a desert background. There are three in the image. Countershading is observed in a wide range of animal groups, both terrestrial, such as deer, and marine, such as sharks. [17] It is the basis of camouflage in both predators and prey. [18]
The grey reef shark has a typical "reef shark" shape with a broad, round snout and large eyes. This species can be distinguished from similar species by the plain or white-tipped first dorsal fin, the dark tips on the other fins, the broad black rear margin on the tail fin, and the lack of a ridge between the dorsal fins. Most individuals are ...
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 ...
Bignose shark: Carcharhinus altimus (S. Springer, 1950) Near threatened 2.7–2.8 m (8.9–9.2 ft) possibly 3 m (9.8 ft) Graceful shark: Carcharhinus amblyrhynchoides (Whitley, 1934) Vulnerable 1.7 m (5.6 ft) 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
The grey reef shark has a typical "reef shark" shape with a broad, round snout and large eyes. This species can be distinguished from similar species by the plain or white-tipped first dorsal fin , the dark tips on the other fins, the broad black rear margin on the tail fin , and the lack of a ridge between the dorsal fins.
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