Sharks should never be eaten due to their struggling population... although yes, Hammerhead Sharks are technically OK to eat. The Great hammerhead is the most recently evolved species of shark. This, according to biologists, could be a sign of overfishing. Any trade of CITES listed species must conform to a Non-Detriment Finding (NDF) which contains management guidelines to ensure the species survival is not threatened by trade. Filling ecological and social data gaps for small-scale fisheries is crucial for global conservation of shark species. Most hammerhead species are placed in the genus Sphyrna, while the winghead shark is placed in its own genus, Eusphyra. In six years (2012-2018), 592 hammerheads sharks have been culled at an average of 99 per year (6). She unloaded shark fins at the El Carmen dock in Puntarenas without being naturally attached to the animal’s body. Brown et al. Hammerhead sharks reproduce slowly – it can take 15-17 years to reach sexual maturity. Scalloped Hammerhead shark (Sphyrna lewini) is an endangered species which its populations have been declining globally including in Indonesia, the world’s top shark fishing country. Shark populations off Australia’s east coast have plummeted in the past 55 years, with new research finding species like great whites and hammerheads are closer to extinction than ever before. Hammerheads vary in size. Don\\\'t forget to follow @theCRNews on instagram! Australian hammerhead shark populations are in decline. Since 1986, Dr. Baum’s analysis of logbook data suggests a population decline of 89% in hammerhead sharks, 79% in great white sharks, 65% in tiger sharks, 80% in thresher sharks, 60% in blue sharks, and 70% in mako sharks. Costa Rica’s Pacific hammerhead shark populations could be in a delicate situation, according to recent data from the Costa Rican Institute of Fisheries and Aquaculture (Incopesca).. Smooth Hammerhead Shark (Sphyrna zygaena) What species of hammerhead sharks are listed as threatened in NSW? 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. This would be a “serious” practice, as reported by the Scientific Advisory Committee of Incopesca. Sharks River White Grey Nurse Sawfish Whale Hammerhead [toc] Assessment of Eligibility for Threatened Species Listing The status of three species of hammerhead sharks is being considered by the Threatened Species Scientific Committee for possible listing as threatened under Part 13 of the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). Great and scalloped hammerheads are already listed as threatened species in NSW and it is illegal to fish for them in NSW state waters (5). You have entered an incorrect email address! “Costa Rica must immediately prohibit the capture and retention of the hammerhead shark, as well as the domestic possession and commercialization of its parts if the country sincerely wants to save this emblematic species from its imminent extinction,” said Arauz. Since 1937 in NSW and 1962 in QLD, lethal shark control programs have been carried out each year using either nets or drumlines. https://www.dpi.nsw.gov.au/fishing/species-protection/hammerhead-sharks-faq, Compiled data from QLD and NSW shark control programs. They are The study, conducted by researchers from Macquarie University and published in the Journal of Fish Biology , found that large sharks over three meters helped maintain marine food webs by preying on lesser predators like … Costa Rica’s Pacific hammerhead shark populations could be in a delicate situation, according to recent data from the Costa Rican Institute of Fisheries and Aquaculture (Incopesca). This seemingly protects the interests of commercial fishing at the expense of our environment and wildlife – by allowing continued fishing of threatened species if a plan to manage the capture of the species is in place. In 2014, for example, more than 8,000 bodies of the latter were unloaded. This, however, does not always happen. Of the eight known species, three inhabit Costa Rican waters under some degree of threat. (Print Ready with Crop Marks), Fish icon by Sergey Demuskin from the Noun Project. By contrast, the IUCN, an international body that assesses the conservation status of wildlife, assessed great and scalloped hammerheads as critically endangered and smooth hammerheads as vulnerable (3, 4). The Institution requested “the improvement of fishing inspections, in such a way that the commercialization of these sharks is not allowed, if they do not meet the size of first sexual maturity”, according to the Non-Harmful Extraction Opinion 2020-2021. It has a length of about 18 to 20 feet. Whitefin hammerhead (Sphyrna couardi) – Unevaluated; Carolina hammerhead (Sphyrna gilberti) – Unevaluated The average great hammerhead measures up to 3.5 m (11 ft) long and weighs over 230 kg (510 lb). 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… Did you guys know that there are actually advantages for their head being shaped that way? A 2016 decree led Incopesca to categorize them as a “commercial species”. hammerhead population has stabilized since the plan was put into place in 1994. To know the real impact on the population, biologists analyze a piece of data called “catch per unit of effort”. The lack of scientific data on population numbers, population range and impacts from outside Australian waters. Hammerhead Shark in Costa Rican Waters Awakens Alarm Due to Possible Population Reduction Costa Rica’s Pacific hammerhead shark populations could be in a delicate situation, according to recent data from the Costa Rican Institute of Fisheries and Aquaculture (Incopesca). Hammerhead Shark in Costa Rican Waters Awakens Alarm Due to Possible Population... 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Hammerhead sharks are particularly vulnerable to being caught in gillnets (fishing nets) because of the unique shape of their head. Status of the Hammerhead Shark. The Scalloped hammerhead shark (Sphyrna lewini) is listed as globally endangered on the IUCN’s Red List. Are Hammerhead Sharks Endangered? Two distinct Commercial fishing is the biggest threat to hammerheads, with 370t of hammerhead sharks legally allowed to be caught every year in Australian waters (1). While in 2017, Incopesca recorded the landing of 7,556 hammerhead shark bodies between both species, for 2019, only 448 bodies were landed in total. Great Hammerhead Shark. Download Print PDF The growing trade in shark fins often used to make an expensive Asian souphas become a serious threat to many shark species. We’re Creating a Conscious alternative news network that we feel the world needs and we need your help! In 2017, the Puntarenas Criminal Court sentenced a businesswoman with the surname, Tseng Chang, to six months in prison for the crime of fluttering. Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population… They are threatened by commercial fishing, mainly for the shark fin trade. With this information, biologists could analyze whether fewer sharks have been caught over the years. Overfishing is one of the main threats to the shark population worldwide. The population of the internationally endangered scalloped hammerhead shark is rapidly declining, and getting killed on baited drumlines is only the beginning of the animal's woes. “It is within this Commission where a group of specialists issues recommendations for the management of pelagic or highly migratory species, which are binding,” says the document. Three hammerhead species have a high risk of extinction: the great hammerhead, which is threatened by the shark fin trade and bycatch (unwanted fish captured as a … Great Hammerhead Shark Sphyrna mokarran . We study the population dynamics of sharks through quantitative demographic methods and assess the status of shark stocks through a variety of stock assessment methodologies. The opening of the Costa Rican air border to all the countries of the world starting this Sunday - three weeks before the start of the high season - is accompanied by a vertiginous interest of the airlines for the destination, If a few years ago someone had told us that women would occupy high positions in companies and that they would even start their own businesses. Incopesca, however, did not provide these data, according to the official letter PESJ-338-2020. Scalloped hammerheads are estimated to have lost up to ~80% of their original population in QLD waters (2). The great hammerhead (Sphyrna mokarran) is the largest species of hammerhead shark, belonging to the family Sphyrnidae, attaining an average length of 4.6 m (15 ft) and reaching a maximum length of 6.1 m (20 ft). The information suggests possible overfishing of these animals, said Fins Attached biologist Randall Arauz. Because of this, protecting young individuals is key to the conservation of the species, explained Jorge Arturo Jiménez, director of the Marviva organization. The Great Hammerhead Shark is the largest species of hammerhead in the world. It is overfished during all stages of its lifecycle. In 2016, international protection of vulnerable smooth hammerhead sharks (Sphyrna zygaena) resulted in a seasonal fishing ban to protect juvenile sharks in Peru's small-scale fisheries.Richer data on the fisheries' social-ecological dynamics are necessary to understand …