Tracking Hammerhead Sharks Reveals Conservation Targets


NSU Researchers Lead Crew Studying Subtle Hammerhead Sharks

FORT LAUDERDALE/DAVIE, Fla. – They’re one of the vital most iconic and irregular-attempting creatures in our oceans. While some might perchance perchance perchance mediate they glimpse a shrimp bit “unusual,” one thing researchers agree on is that shrimp is known about hammerhead sharks. Many of the 10 hammerhead shark species are severely overfished worldwide for their fins and wanting pressing security to forestall their extinction.

To learn extra about a declining hammerhead species that is recordsdata uncomfortable but wanting conservation efforts,  a personnel of researchers from Nova Southeastern College’s (NSU) Attach Our Seas Foundation Shark Learn Center (SOSF SRC) and Man Harvey Learn Institute (GHRI), Fisher Finder Adventures, the College of Rhode Island and College of Oxford (UK), embarked on a survey to resolve the migration patterns of at ease hammerhead sharks (Sphyrna zygaena) in the western Atlantic Ocean. This shark, which can grow as much as 14-toes (400 cm), remains one in all the least understood of the corpulent hammerhead species thanks to the grief in reliably finding at ease hammerheads to enable scientific survey.

The teams research has no longer too long in the past been published by Frontiers in Marine Science – you might acquire the whole research paper ONLINE.

To analyze at ease hammerhead behavior, the research personnel satellite tv for computer tagged juvenile hammerhead sharks off the U.S. Mid-Atlantic soar and then tracked the sharks for as much as 15 months. The sharks had been fitted with fin-mounted satellite tv for computer tags that reported the sharks’ actions in near true time by plot of a satellite tv for computer link to the researchers.

Test Out Frigid Video of a Subtle Hammerhead

“Getting long-time duration tracks became once instrumental in figuring out no longer handiest obvious seasonal chase back and forth patterns, but importantly, moreover the cases and areas the put the sharks had been resident in between their migrations,” mentioned Ryan Logan, Ph.D. pupil at NSU’s GHRI and SOSF SRC, and first creator of the newly published research. “This survey gives the first excessive decision, very long time duration look of the movement behaviors and habitats susceptible by at ease hammerhead sharks – key recordsdata for focusing on particular areas and cases for administration action to assist invent support this depleted species.”

The researchers found that the sharks acted love snowbirds, migrating between two seasonally resident areas – in coastal waters off Recent York in the Summer season and off North Carolina in the Frosty climate. Their residency cases in these two locations coincided with two environmental components: warmer surface water temperatures and areas with excessive productiveness – indicative of meals rich areas.

“The excessive decision actions recordsdata confirmed these focused wintering and summering habitats off North Carolina and Recent York, respectively, to be prime ocean “true property” for these sharks and which capability of this truth predominant areas to provide protection to for the survival of those near endangered animals,” mentioned Mahmood Shivji, Ph.D., director of NSU’s GHRI and SOSF SRC, who oversaw the survey.

Figuring out such areas of excessive residency gives targets for designation as “Vital Fish Habitat” – an noteworthy title established by the US Authorities, which if formally adopted can therefore be subject to special limitations on fishing or model to provide protection to such declining species.

The monitoring recordsdata moreover revealed a second blueprint for conservation. The hammerheads spent quite heaps of resident time in the iciness in a administration zone is named the  Mid-Atlantic Shark Home (MASA) – a zone already federally closed for seven-months per 365 days (January 1 to July 31) to industrial backside longline fishing to provide protection to 1 other endangered species, the dusky shark. Alternatively, the monitoring recordsdata confirmed that the at ease hammerheads arrived in the MASA earlier in December, while this zone is quiet commence to fishing.

“Extending the closure of the MASA zone by stunning one month, beginning on December 1 every 365 days, might perchance perchance perchance lower the fishing mortality of adlescent at ease hammerheads great extra”, mentioned Shivji. “It’s particularly ravishing to sight such frequent research no longer handiest bettering our working out of animal behavior in nature but moreover illuminating pathways for recovery of species and populations which had been overexploited so we can try to win support to a balanced ocean ecosystem”.

The tracks of the at ease hammerheads (and various shark species) will also be found online at

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About Nova Southeastern College (NSU): At NSU, students don’t stunning win an education, they win the aggressive edge they need for true careers, true contributions and true lifestyles. A dynamic, inner most research college, NSU is offering excessive-positive instructional and research programs at the undergraduate, graduate, and noteworthy stage ranges. Established in 1964, the college entails 15 colleges, the 215,000-square-foot Center for Collaborative Learn, the inner most JK-12 grade College College, the sector-class NSU Artwork Museum Fort Lauderdale, and the Alvin Sherman Library, Learn and Info Technology Center, one in all Florida’s largest public libraries. NSU students learn at our campuses in Fort Lauderdale, Fort Myers, Jacksonville, Miami, Miramar, Orlando, Palm Seaside, and Tampa, Florida, to boot to San Juan, Puerto Rico, and online globally. With as regards to 200,000 alumni in the end of the nation and globe, the reach of the NSU community is worldwide.  Classified as having “excessive research activity” by the Carnegie Foundation for the Pattern of Teaching, NSU is one in all handiest 50 universities nationwide to moreover be awarded Carnegie’s Neighborhood Engagement Classification, and is moreover the finest inner most institution in the US that meets the U.S. Division of Education’s standards as a Hispanic-serving Institution. Please discuss over with for extra recordsdata.

About the Attach Our Seas Foundation:  Founded in Geneva, Switzerland, in 2003, the Attach Our Seas Foundation (SOSF) is a philanthropic organization that targets to provide protection to and love the sector’s oceans. Its make stronger for research, conservation and education projects worldwide focuses basically on endangered species of sharks, rays, skates and their habitats. Three eternal SOSF research and education centers make stronger its action in the Seychelles, South Africa and the united statesA. Over the last 17 years, the SOSF has supported some 300 projects worldwide, passionately upholding the Founder’s pledge to provide protection to the populations of sharks, rays and skates whose presence is predominant to the nicely being and biological vary of our seas. Please discuss over with for extra recordsdata.


Joe Donzelli, APR | Set of enterprise of Media Family

Nova Southeastern College

954-262-2159 (location of enterprise) | 954-661-4571 (cell) | | @NSU_Joe

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