hammerhead shark weight
These love to eat stingrays in their diet. The hammerhead sharks are a group of sharks that form the family Sphyrnidae, so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a "hammer" shape called a cephalofoil. The great hammerhead can be distinguished from other hammerheads by the shape of its "hammer" (called the "cephalofoil"), which is wide with an almost straight front margin, and by its tall, sickle-shaped first dorsal fin. Unlike scalloped hammerhead sharks, great hammerhead sharks are solitary and migrate long distances upward of 756 miles (1,200 km) alone. Chief curator, Department of Natural Sciences, Oakland Museum of California. Great hammerheads are particularly threatened by the global shark fin trade because of the large size of their fins.3 More than 90 percent of great hammerheads die once they are captured by targeted or incidental fisheries.2 This high mortality rate, along with the shark’s coastal habitat and highly valued fin, makes the great hammerhead shark endangered with extinction.3. This method is most familiar among the Scalloped hammerhead sharks. Shark fins are prized as a delicacy in certain countries in Asia (such as China), and overfishing is putting many hammerhead sharks at risk of extinction. Sign up today to get weekly updates and action alerts from Oceana. Hammerhead shark usually doesn’t target humans as their prey. These sharks include great white sharks, tiger sharks, and bull sharks. AG. A male shark comes to the female one at least once a year and continuously bites her until she accepts to mate. [28] This practice, known as finning, is lethal to the shark. [31] The scalloped hammerhead is the most frequently maintained large species, and it has been kept long term at public aquariums in most continents, but primarily in North America, Europe, and Asia. [31], In March 2013, three endangered, commercially valuable sharks, the hammerheads, the oceanic whitetip, and porbeagle, were added to Appendix II of CITES, bringing shark fishing and commerce of these species under licensing and regulation. The hammerhead shark uses its head to pin down stingrays and eats the ray when the ray is weak and in shock. However, some sharks are considered man-eaters, also known as niuhi. 3. But now the situation is that most of the species of the hammerhead are endangered. There are many ways to support our vision for a sustainable Galapagos: why not adopt an animal, become a GCT member, or donate today? Hammerhead sharks are ready to go the extra mile to get this meal. Smaller shark gives birth to fewer pups, and pregnancy periods last for a few weeks. The young swim mostly in shallow waters along shores all over the world to avoid predators. [12] By distributing the receptors over a wider area, like a larger radio antenna, hammerheads can sweep for prey more effectively. In most cases, hammerhead sharks behave as herds. As with all hammerhead species, they have viviparous reproduction meaning that pups are nourished by a placental link to the mother much like mammals, and are born alive and fully functional. The most common of the hammerhead sharks, scalloped hammerheads are a migratory species found in warm temperate and tropical waters of the Atlantic, Indian and Pacific Oceans. The body is slender and is a brown-bronze colour on top and white below. Renowned artist Ken Thaiday Snr is known for his representations of beizam in his sculptural dari and other works. We are working with partners to ensure they are protected throughout their life stages, including on their migrations, as part of our Endangered Sharks of Galapagos programme. They may migrate seasonally, moving equatorward during the winter and poleward during the summer. Unlike most sharks, some hammerhead species usually swim in schools during the day, becoming solitary hunters at night. Galapagos Conservation Trust are supporting research which will ensure that vulnerable sharks are protected throughout their life span. Most of those attacked were spearfishing, and it could be that the blood of the speared fish attracted the sharks. https://www.nationalgeographic.com/animals/fish/group/hammerhead-sharks AG. Hammerhead Shark Fish Species, Types, Diet, Facts, Size, Habitat, Lifespan, Reproduction, Attacks, Facts can be checked from here. Overview of several shark species, including the lemon, tiger, and hammerhead sharks. When she is ready for delivery, she gives birth to live cub. Great hammerhead sharks also have a faster growth rate than the other hammerhead species and therefore reach maturity earlier, between 5 and 9 years old. The winghead on the other side is placed in its genus known as Eusphyra. Get more information about hammerhead shark from this page. The species are also known to form schools during the day and the sometimes the group crossed 100. 1 oz - Hunters of the deep. Like all sharks, hammerheads have electroreceptory sensory pores called ampullae of Lorenzini. Because of their large size, great hammerhead sharks are not preyed upon by other marine animals.1, Great hammerheads are, however, vulnerable to overfishing. Class Chondrichthyes, Order Carcharhiniformes (Ground sharks), Family Sphyrnidae (Hammerhead sharks). These sharks are often seen swimming at the bottom of the oceans while staking their prey. (2011). The coloration of the Great Hammerhead Shark varies from gray-brown to light green on their backs, including dorsal fins and tail.


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