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The grey reef shark is a fast-swimming, agile predator that feeds primarily on free-swimming bony fishes and cephalopods. Its aggressive demeanor enables it to dominate many other shark species on the reef, despite its moderate size. Many grey reef sharks have a home range on a specific area of the reef, to which they continually return.
The largest species, called simply the nurse shark Ginglymostoma cirratum, may reach a length of 4.3 m (14 ft); the tawny nurse shark Nebrius ferrugineus is somewhat smaller at 3.2 m (10 ft), and the short-tail nurse shark Pseudoginglymostoma brevicaudatum is by far the smallest at just 75 cm (2.46 ft) in length. The first of the three species ...
Common name Scientific name Geographic range Conservation status IUCN Red List Length Image Blacknose shark: Carcharhinus acronotus (Poey, 1860) Endangered 1.3 m (4.3 ft) Silvertip shark: Carcharhinus albimarginatus (Rüppell, 1837) Vulnerable 2–2.5 m (6.6–8.2 ft) maximum 3 m (9.8 ft) Bignose shark: Carcharhinus altimus (S. Springer, 1950)
These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without a subterminal notch. Unlike nearly all other shark species, dogfish possess venom , which coats their dorsal spines and is mildly toxic to humans.
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").
The blacktip reef shark has also been known to become aggressive in the presence of bait, and may pose a threat while attempting to steal the catches of spear fishers. [3] The blacktip reef shark is a normal catch of coastal fisheries, such as those operating off Thailand and India, but is not targeted or considered commercially important. [9]
Get ready to sink your teeth into these funny puns. The post 50 Shark Puns That Are Simply Fin-tastic appeared first on Reader's Digest.
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