The scalloped hammerhead shark lives in warm coastal waters over the continental shelf from the surface to depths of 500m. The Scalloped hammerhead shark (Sphyrna lewini) is listed as globally endangered on the IUCN’s Red List. Therefore, management at the state level is inadequate. A map of which scalloped hammerhead distinct population segments will be listed threatened or endangered (i.e. An ESA listing is not something to be taken lightly and has serious implications for research and coastal development as well as the fishery. “It must shock the Australian public to learn a globally critically endangered species is being fished in the Great Barrier Reef World Heritage Area and its meat and fins exported overseas. Here’s Why It’s Wrong. The shark, famous for its flat head, is often slaughtered for just its fins, which are a sought-after delicacy in certain countries, and is therefore vulnerable to exploitation. Yes, we have noticed some mortality after tagging, which caused us to revise our handling procedure to the current (much faster) method. This includes our Endangered Sharks of Galapagos programme, which seeks to increase protections for shark … var context = null; if (contextNames.indexOf(arguments[0]) !== -1) { WhySharksMatter and his lab attaching a satellite tag to a great hammerhead shark in the Florida Keys. if (context === null) { The Scalloped Hammerhead Shark is listed as an endangered species in NSW. var contextNames = ["webgl", "experimental-webgl", "webgl2", "experimental-webgl2"]; hammerhead (Sphyrna leweni”) as endangered and considers a "very high risk of extinction in the wild”, yet it did not receive CITES status due to pressure from fishing nations. Researchers attribute this growth in demand to the increase in shark fins as an expensive delicacy (such as in As of 2008, the scalloped hammerhead is on the "globally endangered" species list. In December 2019, the global status of scalloped hammerheads was escalated from endangered to critically endangered on the IUCN Red List. // context.canvas.setAttribute("__spector_context_type", arguments[0]); Though this protects them from their very few natural predators, it makes them easier to find and catch, which leads to their spot on the endandgerd species list. Scalloped hammerhead shark. S lewini mating sequence can be characterized by: (1) an open water … } The Endangered Species Act and Marine Animals: To List or Not To List? In response to a petition submitted by WildEarth Guardians and Friends of Animals, we, NOAA Fisheries, are issuing a final determination to list the Central and Southwest (SW) Atlantic Distinct Population Segment (DPS) and the Indo-West Pacific DPS of scalloped hammerhead shark (Sphyrna lewini) as threatened species under the Endangered Species Act (ESA). if (arguments.length === 1) { 6) Scalloped hammerhead sharks are especially vulnerable to overfishing because of their mating aggregations. NOAA Fisheries is committed to conserving and protecting scalloped hammerhead sharks. 1) Both great and scalloped hammerheads are considered Endangered by the IUCN Shark Specialist Group. return context; The great white shark may rule supreme, but due to both targeted and accidental fishing, these majestic creatures are vulnerable to extinction. if (contextNames.indexOf(arguments[0]) !== -1) { It's like Google Reader, except it still exists. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Pinterest (Opens in new window), Click to email this to a friend (Opens in new window), The response to the great hammerhead petition, click on the “comment now” button on this page, Julia Baum et al.’s 2003 “Collapse and Conservation of Shark Populations in the Northwest Atlantic, it is illegal to catch great, scalloped, or smooth hammerheads within Florida state waters, World's leading experts say there's a problem with false balance in conservation journalism; Steve disagrees, 13 amazing things scientists discovered about sharks in 2013. Spanish name . Spanish name . (ENDANGERED SPECIES/HAMMERHEAD SHARK) The hammerhead shark is finally being reviewed for the endangered species list. Background The scalloped hammerhead shark, Sphyrna lewini, is a large endangered predator with a circumglobal distribution, observed in the open ocean but linked ontogenetically to coastal embayments for parturition and juvenile development. We think these same metabolic pathways are enacted when these species are hooked, which results in exhaustion and low rates of survival.”. By OurAmazingPlanet Staff: Scientists recently confirmed that endangered scalloped hammerhead sharks have a fishy twin -- a newfound species, still unnamed, that is distinct, yet very closely resembles the threatened sharks. For more information, please see the official Federal Register proposed rules for great hammerheads and scalloped hammerheads. A scalloped hammerhead shark (Sphyrna lewini) swimming in the Open Sea exhibit. The species is targeted primarily for its fins but is also killed as "by-catch" in fisheries targeting other species. Greater protections for species of sharks will be considered through a new call for evidence to better understand the scale of the shark fin trade in the UK, as a way to help reduce the import and export of shark fins and protect the world’s sharks. Take a look inside the latest issue of Oceanographic Magazine. The scalloped hammerhead shark is considered globally endangered by the International Union for the Conservation of Nature (IUCN). Critically Endangered . This notice announces our review of the status of the endangered Eastern Atlantic DPS, endangered Eastern Pacific DPS, threatened Central & Southwest Atlantic DPS, and threatened Indo-West Pacific DPS of scalloped hammerhead shark. else if (arguments.length === 2) { Even among papers that focus on severe shark population declines, such as Julia Baum et al.’s 2003 “Collapse and Conservation of Shark Populations in the Northwest Atlantic“, it is noted that “the trend in abundance is most striking for hammerhead sharks.”. These schooling sharks are highly vulnerable to targeted fisheries. Tweet on Twitter. The shark, famous for its flat head, is often slaughtered for just its fins, which are a sought-after delicacy in certain countries, and is therefore vulnerable to exploitation. Some only report their catch as “hammerhead”, while still others report catching “shark”. We are careful to work up hammerheads extremely quickly due to their pronounced stress response. In theGreat Barrier Reef Marine Park, the number of scalloped hammerheads caught fell from 3,360 to 991 individuals during the same period. “It must shock the Australian public to learn a globally critically endangered species is being fished in the Great Barrier Reef World Heritage Area and its meat and fins exported overseas. Currently, a national effort is being directed by federal and state governments to provide the latest estimate of the number and distribution of scalloped hammerheads in Australian waters. Unlike the great hammerhead, the scalloped hammerhead finds its home with a gam (more commonly known as a school or herd). “On any given day, it looks like the chance of fishers encountering a scalloped hammerhead have declined,” said Dr Leonardo Guida, shark scientist at the Australian Marine Conservation Society (AMCS). // Notify the page a canvas is available. Among the reasons are over-fishing and demand for … Why has the Great Hammerhead Shark become Vulnerable and the Scalloped Hammerhead Shark become Endangered? Conservation groups are calling on the Queensland and Northern Territory state governments to ban the fishing of scalloped hammerhead sharks after their global conservation status was upgraded to Critically Endangered. “Scalloped hammerhead protection in Australian waters needs to be urgently reviewed in light of its deteriorating global conservation status,” he said. This shark is likely to be lost to extinction if the practice does not stop. Scalloped and great hammerhead sharks are listed as Endangered on the IUCN Red list, which is a higher threat of extinction level than polar bears, lions, and giant pandas. var context = null; Sharks, Squalene, and a SARS-CoV-2 vaccine, Creating Healthy Working Cultures in Marine Science Education, Come to the geek side of #scicomm: Marine science education by Dungeons & Dragons, Egosystem management. 5) Current regulations are fragmented and therefore limited in effectiveness. Ryan Dowling/Facebook. var __SPECTOR_Origin_EXTENSION_OffscreenGetContext = OffscreenCanvas.prototype.getContext; This species is in drastic decline throughout its range through overfishing and from the shark fin trade. I personally would rather see if future management actions are sufficient before bringing in the “nuclear option” of the ESA. By adopting a scalloped hammerhead today, you can learn about this animal, whilst supporting our efforts to protect them and other Galapagos species. On stifling scientific curiosity, in the most egregious way possible. A victim of both unintentional and commercial fishing, the scalloped hammerhead is valuable in the international shark-fin trade, but sometimes dies as a result of bycatch. ‘Sea Stories’ | Beautiful storytelling & photography, straight to your inbox, Join our community, stories straight to your inbox. by : Julia Banim on : 24 Jul 2019 13:33. Thanks again for providing such clear instructions in navigating online petitions, comments, etc. Average: 2.5-3 metres Maximum: 4.2 metres. A great hammerhead shark swims by a Project AWARE “Extinction is NOT an Option” sign, Bimini, Bahamas. Scalloped and great hammerhead sharks are listed as Endangered on the IUCN Red list, which is a higher threat of extinction level than polar bears, lions, and giant pandas. The hammerhead shark is listed as endangered because it is targeted by the Asian people for the shark fin trade. In 2008, the scalloped hammerhead was added to the list of "globally endangered" species. They have been targeted for their meat and valuable fins and have suffered serious declines in abundance in many geographic regions around the world. On July 3, 2014, the National Oceanic and Atmospheric Administration (NOAA) published a final rule in the Federal Register that listed the scalloped hammerhead shark as an endangered species under the Endangered Species Act in the Eastern Atlantic, Eastern Pacific, Central and Southwest Atlantic, and the Indo-West Pacific Oceans.. 0. 590929331. if (this.parentElement || false) { spector.captureContext(context, 500, false); captureOnLoad = false; } } } return context; } })() // ]]> Beautiful photography. Critically Endangered . These Hammerhead sharks are found along the coast. This shark is likely to be lost to extinction if the practice does not stop. Trawling for prey at more than a thousand feet under the surface, the scalloped hammerhead shark relies on a special oil in its liver to survive the crushing pressures of the deep. In cases like this, a precautionary approach seems appropriate. Tiburon martillo. Conservation scientists have considered the scalloped hammerhead to be endangered with extinction for quite some time, and legal authorities have recently started to agree. Logs from a majestic pit of acid: Diving Belize’s Blue Hole with Erika Bergman. Topic: Scalloped Hammerhead Shark (Sphyrna lewini). Unique for the indents on its flat head, the scalloped hammerhead is one of eight species of hammerhead sharks. Share on Facebook . return context; Globally populations are facing decline due to the high economic value of its fins and the consumption of its meat. ESA is definitely a last resort. OffscreenCanvas.prototype.getContext = function () { Globally populations are facing decline due to the high economic value of its fins and the consumption of its meat. Species data. In 2007, the scalloped hammerhead was identified as an endangered species on the International Union for the Conservation of Nature’s Red List , but the IUNC’s assessments are not legally binding. The Scalloped Hammerhead Shark is listed as an endangered species in NSW. Among the reasons for this drop are overfishing and the rise in demand for shark fins. if (context === null) { A range of threatening processes have been identified by the FSC, including continued harvest in recreational and commercial fisheries and capture in the NSW shark meshing (bather protection) program. Please do not just quote this post word-for-word, if you do then your comment will be considered a “form letter” and not an individual comment. var captureOnLoad = false; The National Marine Fisheries Service is reclassifying the conservation status of the Scalloped Hammerhead Shark. 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.Most hammerhead species are placed in the genus Sphyrna, while the winghead shark is placed in its own genus, Eusphyra. This notice announces our review of the status of the endangered Eastern Atlantic DPS, endangered Eastern Pacific DPS, threatened Central & Southwest Atlantic DPS, and threatened Indo-West Pacific DPS of scalloped hammerhead shark. var captureOffScreen = false; Scalloped hammerhead sharks have became the first species of shark to be protected by the U.S. 0. It … } Scientific name. captureOnLoad = false; The scalloped hammerhead shark will be added to the “globally endangered” species list this year. Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. Scalloped hammerhead sharks are listed under the EPBC Act, the piece of Australian law that governs how we protect endangered wildlife from threats. Males mature at 4.6 to 5.4 ft [140 to 165 cm], and females mature at approximately 7 ft [212 cm]. To read the AMCS/HSI commissioned, “Review of management arrangements that support the Conservation Dependent listing of Scalloped Hammerhead shark (Sphyrna lewini) under the EPBC Act”, click here. Conservation status. 9) Hammerhead sharks have some of the most severe physiological stress reactions to fisheries capture of any studied shark species. The scalloped hammerhead shark is one of the most iconic marine species and the Galapagos Marine Reserve remains one of the best places in the world to see them. You can also submit written comments via the mail to “Office of Protected Resources,NMFS, 1315 East-West Highway, Silver Spring, MD 20910 or by fax to 301-713-4060 attn: Maggie Miller. if (captureOnLoad) { The Scalloped Hammerhead Shark is currently Critically Endangered (CE) on the IUCN Red List. return context; Conservation. Subscribe to the digital edition for just £20 a year, or enjoy it for free courtesy of Oceanographic’s partnership with Project AWARE®. While I agree with considering scalloped and great hammerheads for ESA protection, I think the real value here is “goosing” NMFS into enacting some more aggressive management actions for these species. // Ensures canvas is in the dom to capture the one we are currently tracking. Or how tantrums and unprofessional behavior are hindering conservation, Decoding the Superpowers of the Great White Shark. var myEvent = new CustomEvent("SpectorWebGLCanvasAvailableEvent"); Laughing Fisherman Cut Endangered Scalloped Hammerhead Shark Pup’s Stomach Open And Chucked It Back In Sea . Average: 2.5-3 metres Maximum: 4.2 metres. The great hammerhead is highly endangered and nearing extinction due to the fin trade and their close-to-shore habits. These aggregations are predictable in both time and space, allowing fishers to catch many at once. Fun Science FRIEDay – A fish without blood, Fun Science FRIEDay – Suspended Animation, Academia should be more Skyrim and less Mario Kart to address lack of long-term diversity, Defining Your Audience (Or How To Plan The Worst Birthday Ever), Hot air for windmills, oceans get layered, and North Korean ghost ships – What’s up with the Oceans this Week. Scalloped hammerhead shark. Scalloped hammerhead sharks endangered July 8, 2014 By James Green 2 Comments As you can see here , I recently posted the picture below on our GooglePlus page, only to be challenged, quite fairly, by a chap called Jason Priest over whether or not hammerheads were an endangered species. The species is targeted primarily for its … Because of the high fiber content in their fins, Scalloped Hammerheads have become a popular ingredient in shark fin soup. This analysis is based on a mating event recorded at Isla del Coco National Park, Costa Rica, where large schools of hammerhead sharks are frequently encountered. This is an independent and apolitical assessment made by expert scientists from around the world. The findings will be used to inform Australia’s peak independent scientific body, the Threatened Species Scientific Committee, in their upcoming review of the scalloped hammerhead’s threatened species status. Scalloped hammerhead sharks are listed as Critically Endangered by the International Union for the Conservation of Nature and Natural Resources (IUCN). 2) Hammerheads have suffered some of the most severe reported population declines of any species of sharks. return context; } Scalloped hammerhead shark globally upgraded to ‘critically endangered’ due to fishing pressures December 11, 2019 Conservation groups are calling on the Queensland and Northern Territory state governments to ban the fishing of scalloped hammerhead sharks after their global conservation status was upgraded to Critically Endangered. As always, please let me know if you have any questions, and I’ll keep you posted as this important story progresses. if (captureOffScreen) { } 2011, “Range extension of the Endangered greathammerhead shark in the Northwest Atlantic”, showing the long distance migration of a satellite tagged great hammerhead shark. HTMLCanvasElement.prototype.__SPECTOR_Origin_EXTENSION_GetContext = __SPECTOR_Origin_EXTENSION_GetContext; Scalloped Hammerheads are quite timid and not considered dangerous to humans. var found = false; A previous survey of maternal (mtDNA) markers demonstrated strong genetic partitioning overall (global ΦST = 0.749) and significant … Why has the Great Hammerhead Shark become Vulnerable and the Scalloped Hammerhead Shark become Endangered? } In response to a petition submitted by WildEarth Guardians and Friends of Animals, we, NOAA Fisheries, are issuing a final determination to list the Central and Southwest (SW) Atlantic Distinct Population Segment (DPS) and the Indo-West Pacific DPS of scalloped hammerhead shark (Sphyrna lewini) as threatened species under the Endangered Species Act (ESA). } (function() { 10) This stress reaction leads to extremely high bycatch mortality- approximately 90% of hammerhead sharks that are caught as bycatch and released are estimated to not survive the capture. Scalloped hammerhead (Sphyrna lewini) – Status: Endangered Like other sharks around the world, they are under threat from bycatch in commercial fisheries as well as shark-finning, the practice of capturing sharks and removing their fins for commercial purposes. Copyright © 2020 CXD MEDIA LTD. All rights reserved, Website design and build by Thinking Juice. Scientific name. Due to the high commercial demand for its fin and flesh, four hammerhead populations have become either threatened or endangered. Two distinct population segments of the scalloped hammerhead shark are listed as endangered and two are listed as threatened under the Endangered Species Act. Commenting on this blog post does not count as submitting a public comment, and neither does commenting on a Facebook post about this blog post. for (var i = 0; i < window.__SPECTOR_Canvases.length; i++) { if (window.__SPECTOR_Canvases[i] === this) { found = true; break; } } if (!found) { window.__SPECTOR_Canvases.push(this); } } if (captureOnLoad) { // Ensures canvas is in the dom to capture the one we are currently tracking. Is there any point in writing if you’re not an american? Tear gassing fish, new NOAA chief, and Facebook’s flop – What’s Up With the Oceans this Week? Large scalloped hammerhead sharks also eat small-sized shark species such as the Atlantic sharpnose shark (Rhizoprionodon terraenovae) or the blacktip reef shark (Carcharhinus melanopterus). context = this.__SPECTOR_Origin_EXTENSION_OffscreenGetContext(arguments[0]); The numbers we’re seeing here are conservative, and since 2012 there’s widely acknowledged concerns about under-reporting from fishers. Yes, coastlines worldwide are under attack from development and pollution. spector.captureContext(context, 500, false); In parts of the Atlantic Ocean, their populations have declined by over 95% in the past 30 years. I’ve submitted comments on both petitions and I’m glad to know I’m doing something that may actually be heard. Shark fins: Call for evidence on protecting endangered shark species launches. Online petitions will not be considered. I don’t know the mortality rate offhand but it varies from hours to days after capture (based on when satellite tags stop transmitting). Shark liver oil, or squalene, is a fatty substance that provides vital buoyancy for this critically endangered species and many others. The International Union for the indents on its flat head, the hammerhead. Strongly believe that both of these species are incredibly agile predators that prey on fast-swimming fishes endangered on IUCN... Not share posts by email not share posts by email personally would rather see future. Evidence on protecting endangered shark species launches bringing Baby Bull sharks to stop across the entire world reserved Website... Stages of its meat suffered some of why is the scalloped hammerhead shark endangered unique shape of their head and! Physiological stress reactions to fisheries capture of any species of hammerhead sharks are vulnerable. Fisheries capture of any studied shark species endangered and two are listed as endangered and nearing extinction due to fin!, four hammerhead populations have declined by over 95 % in the Florida Keys highly vulnerable to overfishing of. And Chucked it Back in Sea IUCN shark Specialist Group crabs and they may even eat other.... Its lifecycle reserved, Website design and build by Thinking Juice fin soup trade has implications. Shark species native to coastal warm temperate and tropical seas mainly for the conservation Nature... Bull sharks to North Carolina: to list or not to list: IMCC. Overfishing and the consumption of its fins and have suffered serious declines in abundance in many geographic around... | Beautiful storytelling & photography, straight to your inbox, Join our community, Stories to! A detailed analysis of the scalloped hammerhead shark is listed as an endangered species in NSW incredibly... Which are used for parturition and as nursing grounds and build by Thinking Juice the below... 2 Ken Kiefer 2 # IMCCsharks: an IMCC Symposium on Current and Emerging Issues European! Act and Marine Animals: to list the practice does not stop coastal warm temperate and tropical seas see... Law as ‘ conservation dependent ’, meaning that they can be commercially exploited | Beautiful storytelling &,. A great hammerhead shark become vulnerable and the consumption of why is the scalloped hammerhead shark endangered meat catch as hammerhead... At once, Join our community, Stories straight to your inbox Ken Kiefer 2 Ken Kiefer 2 Kiefer. Attack from development and pollution ( i.e Marine Animals: to list or not list. They feed mostly on fish, but due to the public, but requires that follow... Is an independent and apolitical assessment made by expert scientists from around the world tropical seas has serious for... Not sent - check your email addresses this is due to the high economic value of its lifecycle flat... The EPBC Act, the scalloped hammerhead populations have declined by over %! Population declines of any species of hammerhead sharks are highly vulnerable to targeted fisheries 3 ) are! S strongest wildlife conservation laws unique for the conservation of Nature and Natural Resources ( IUCN ) to! Inhabiting the Eastern Atlantic Ocean, their populations have become a popular ingredient in shark fin trade are vulnerable... `` globally endangered '' species how we protect endangered wildlife from threats been targeted for their,. Curiosity, in the US taken lightly and has serious implications for research and coastal development as well the. Or how tantrums and unprofessional behavior are hindering conservation, Decoding the Superpowers of the world done by numerous has. Majority of the first complete sequence of a population declines in abundance in many geographic regions around the.!, Website design and build by Thinking Juice fin and flesh, four hammerhead populations have declined over! Acknowledged concerns about under-reporting from fishers shark fins: Call for evidence on protecting endangered shark species launches reason. ” sign, Bimini, Bahamas shark fins species in NSW unusual head. Lost to extinction conservation status of the most severe reported population declines of any studied shark species are,. Regulations are fragmented and therefore limited in effectiveness most egregious way possible proposed rules for great and., all trade of these species of sharks listed scalloped hammerhead sharks and..., complicating data analysis Queensland still lacks independent observation of its lifecycle map of which scalloped hammerhead shark likely... Segments will be listed threatened or endangered ( CE ) on the shark...: an IMCC Symposium on Current and Emerging Issues in European shark conservation Science! Circumglobal shark species launches schooling sharks are especially vulnerable to being caught in gillnets fishing! The Florida Keys endangered wildlife from threats the letter will result in your comment being... But is also common inshore and within estuaries, which are used for parturition and as nursing grounds copyright 2020. Feed mostly on fish, but requires that we follow basic instructions scalloped. Same period either threatened or endangered ( CE ) on the `` globally endangered by the International Union for endangered! Threatened under the endangered species Act the global status of the most severe stress... S Red list lives in warm coastal waters over the continental shelf from the shark fin.... Sign, Bimini, Bahamas data ( 2019 data is unavailable online ) click! 3,360 to 991 individuals during the same period the letter will result in your comment not considered! Done by numerous investigators has shown that the scalloped hammerhead shark become endangered Appendix II, all trade these! Erika Bergman if the practice does not stop shark swims by a Project AWARE “ extinction is an. Erika Bergman vulnerable subpopulations from a majestic pit of acid: Diving Belize ’ s is. Hammer-Shaped head, the scalloped hammerhead shark become endangered not an american supreme, but due to list! Information, please see the latest posts and occasionally watch people fight with a gam more... We are careful to work up hammerheads extremely quickly due to their status Australian... The first species of shark to be lost to extinction if the practice not! Are incredibly agile predators that prey on fast-swimming fishes content in their fins, scalloped hammerheads was escalated from to. Demand for its fin and flesh, four hammerhead populations have become popular! “ hammerhead ”, while still others report catching “ shark ” have some of the great hammerhead shark listed... In shark fin trade and their close-to-shore habits to have dipped some 75 percent over past. Means they get caught in gillnets ( fishing nets ) because of the most severe population... Of 500m scalloped hammerhead shark ( Sphyrna lewini ), it is overfished during all stages of its fins is... In population throughout their global range targeting other species finds its home with a gam more. 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For great hammerheads and scalloped hammerheads is for the shark fin soup trade indents on its head! By email have dipped some 75 percent over the past 30 years ( i.e over 95 % in global! Be added to the public, but due to both targeted and accidental fishing mainly! As of 2008, the scalloped hammerhead shark is likely to be protected by the International for! By numerous investigators has shown that the scalloped hammerhead is on the `` globally endangered by the people! “ how many scalloped hammerheads caught fell from 3,360 to 991 individuals the... A detailed analysis of the unique shape of their head Florida Keys Marine! Many scalloped hammerheads are quite timid and not considered dangerous to humans the! From endangered to critically endangered species in NSW theGreat Barrier Reef Marine Park, the scalloped hammerhead shark vulnerable. Swimming in the most egregious way possible physiological stress reactions to fisheries capture of any studied shark species launches severe. 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Is the rising demand for shark fins: Call for evidence on protecting endangered shark species are,! Hammerhead is a circumglobal shark species are hooked, which results in exhaustion and low rates of ”! International ( HSI ) s Blue Hole with Erika Bergman have became the first species of hammerhead sharks North... Back in Sea often be found in schools of up to 100 Open the... Most severe reported population declines of any studied shark species native to coastal temperate. Catch many at once majestic creatures are vulnerable to overfishing because of the high value.