![]() It is found in warm temperate and tropical waters, worldwide from 46°N to 36°S.They are found in South Africa, the Red Sea, Indian Ocean, Japan, Hawaii, Australia, and Tahiti. The scalloped hammerhead is a coastal pelagic species it occurs over continental and insular shelves and in nearby deeper water. The top jaw teeth are going to be erect and the bottom jaw teeth are more erected than the upper jaw teeth. ![]() The dentation of these sharks is going to consist of small, narrow, triangular teeth that have smooth edges. Their social intelligence is especially important for their aggregative behavior, allowing the species to reproduce with the fittest members and proliferate the species easier. lewini is also noted for its large and complex brain, with high levels of cognitive capabilities, social intelligence, sensorimotor functions, intricate migrations, complex habitat relationships, and athletic capture of prey. Due to high metabolic rates, young scalloped hammerhead sharks need a lot of food, or they will starve. The scalloped hammerhead shark, like many other species, uses the shore as a breeding ground. These sharks have a very high metabolic rate, which governs behavior in acquiring food. A female caught off of Miami was found to have measured 3.26 m (10.7 ft) and reportedly weighed 200 kg (440 lb), though was in a gravid state then. The maximum length of the scalloped hammerhead is 4.3 m (14 ft) and the maximum weight is 152.4 kg (336 lb), per FishBase. Typically, males measure 1.5 to 1.8 m (4.9 to 5.9 ft) and weigh about 29 kg (64 lb) when they attain sexual maturity, whereas the larger females measure 2.5 m (8.2 ft) and weigh about 36.2 kg (80 lb) at sexual maturity. Scalloped hammerhead sharks are typically uniform grey, grayish brown, bronze, or olive with a white underside for countershading. They have a very large first dorsal fin that is slightly hooked and a smaller second dorsal fin. There is also two indentations on either side of the central indentation, which gives the "scalloped" look. The scalloped hammerhead is easily distinguished from other hammerhead sharks by the central indentation on the anterior margin of the head. ![]() These sharks are classified as ground sharks in the Order Carcharhiniformes. Though once considered a distinct species, McEachran and Serret synonymized Sphyrna couardi with Sphyrna lewini in 1986. It is a sister species to Sphyrna gilberti, differing by the number of vertebrae. Sphyrna comes from the Greek and translates to hammer. It has also been named Cestracion leeuwenii by Day in 1865, Zygaena erythraea by Klunzinger in 1871, Cestracion oceanica by Garman in 1913, and Sphyrna diplana by Springer in 1941. The scalloped hammerhead was first named Zygaena lewini and then renamed Sphyrna lewini by Edward Griffith and Hamilton Smith in 1834. It is the most common of all hammerheads. It primarily lives in warm, temperate, and tropical coastal waters all around the globe between latitudes 46°N and 36°S, down to a depth of 500 m (1,600 ft). This shark is also known as the bronze, kinky-headed, or southern hammerhead. It is a fairly large hammerhead, but is still smaller than both the great and smooth hammerheads. The shark's eyes and nostrils are at the tips of the extensions. The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head, which is its most distinguishing characteristic. It was originally known as Zygaena lewini. The scalloped hammerhead ( Sphyrna lewini) is a species of hammerhead shark in the family Sphyrnidae.
0 Comments
Leave a Reply. |