The Amazing World of Sharks. The great hammerhead is the largest of the nine identified species of this shark. The Explorers Club went live on Facebook to do a deep dive on the importance of sharks … Like all hammerhead sharks, the scalloped hammerhead is an active predator and gains several advantages from the shape of its head. Hammerhead Shark Distribution. Next Up. Removing sharks in large numbers can have ripple effects that throw entire ecosystems out of balance. The scalloped hammerhead isn’t the only species which creates schools: The smooth hammerhead (Sphyrna zygaena) also travels in groups. There are 9 known species of Hammerhead sharks that range from 0.9 to 6 metres (3 to 20 feet) in length. Today is Shark Awareness Day! Given the fact, that about 1.3-2.7 million S. zygaena or S. lewini (biomass 49,000-90,000 t) annually are reported to be found in the shark fin trade (Clarke et al. Its highly migratory nature, slow growth, and lengthy gestation period place this common bycatch species at risk to fishing practices on the high seas, at oceanic congregation sites, and throughout coastal birth zones. Like the many large coastal shark species, the scalloped hammerhead has seen population declines of over 95 percent in the last 30 years — mind-boggling given sharks … (© Jeff Rotman/jeffrotman.com) Hammerhead Sharks are found in many bodies of water around the world that are warm. Shark Culling. Hammerhead sharks have never been involved in a fatal incident. Mass: Up to 450 kg (1000 lbs) Length: 6.1 m (20ft) More About Hammerhead Sharks. They can be observed cruising over reefs and boulder-strewn slopes. Photo by: Gerard Soury Gerard Soury. It can grow up to 20 feet in length and weigh up to 1,000 pounds, although smaller sizes are more common. The Scalloped hammerhead is a circumglobal shark species native to coastal warm temperate and tropical seas. Lifespan: 20-30 years. There are nine species of hammerhead sharks … how many hammerhead sharks are left in the world 2020. The widely spaced eyes, nostrils, and other senses allow the scalloped hammerhead to more successfully locate its prey near, or buried in, the sea floor. In six years (2012-2018), 592 hammerheads sharks have been culled at an average of 99 per year (6). Every year, humans kill an estimated 100 million sharks. HAMMERHEAD SHARK FACTS. Scientific name: Sphyrnidae (Sphyrna mokarran – Great Hammerhead) Conservation Status: Endangered. Fisheries data comparing 2019 with 2018 suggests the numbers of scalloped hammerhead sharks are continuing to fall in Queensland, Australia, with commercial gillnet fishers reporting fewer catches. Shark Finning: Sharks Turned Prey A fisherman holds a freshly cut dorsal fin from a scalloped hammerhead shark (Sphyrna lewini). Posted on October 11, 2020 | by . Large numbers of them have been identified around Cocos Island close to … Despite great efforts to look for an actual value of global population of scalloped hammerhead sharks, Sphyrna lewini, I could not find any relevant publication. They tend to live the most often through the continental shelves and the coastlines. Along with the great hammerhead, smooth hammerhead, and several unrelated species of sharks, scalloped hammerheads were listed on Appendix II of … SCALLOPED HAMMERHEAD SHARK, Sphyrna lewini, Sphyrnidae, Red Sea, Egypt. In December 2019, the global status of scalloped hammerheads was escalated from endangered to critically endangered on the IUCN Red List . Hammerhead sharks are also threatened by culling through lethal shark control programs. 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