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Latest Hammerhead shark Stories

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2011-04-28 06:35:00

An international team of scientists have used DNA to determine that groups of dusky sharks and copper sharks living in different coastal regions across the globe are in fact separate populations of each species. Both groups are heavily exploited for the shark fin trade, which claims tens of millions of animals every year to produce the Asian delicacy: shark fin soup. Many of these fish are declining rapidly as a result of pressures of fishing for their fins. The dusky shark is classified by...

8a81dbb82145b4e4f4c730aa5cf01f911
2011-02-28 08:59:26

New study provides new insight into the largely unknown migratory patterns and habitat use of the endangered shark A study led by scientists at the University of Miami (UM) Rosenstiel School of Marine & Atmospheric Science details the first scientific research to successfully track a great hammerhead shark using satellite tag technology. Rosenstiel School Research Assistant Professor Neil Hammershlag and colleagues tracked one of the nomadic sharks for 62 days to uncover its northeast...

2010-12-06 18:04:00

HONOLULU, Dec. 6, 2010 /PRNewswire-USNewswire/ -- Scientific recommendations for improving information on population status and fishing of sharks will be considered this week at the annual meeting of the Western and Central Pacific Fisheries Commission (WCPFC). Scientists are recommending that the WCPFC adopt a three-phase shark research plan, identify species of concern, and make reporting on shark catches mandatory. Shark catch reporting has proved a challenge for some WCPFC member...

595011d1fde771e080e673b230f65df61
2010-11-28 08:35:00

A fisheries group decided on Saturday that half-a-dozen species of endangered sharks hunted on the high seas to satisfy a burgeoning Asian market for sharkfin soup are now protected in the Atlantic. The International Commission for the Conservation of Atlantic Tunas (ICCAT) said that scalloped, smooth and great hammerheads, along with oceanic white tip, cannot be targeted or kept if caught accidentally. Three other types of hammerhead sharks are also included in the ban, including smalleye,...

930e52bc5a645bec8881c794c2fddc9e1
2010-06-11 07:11:19

It's no secret that sharks have a keen sense of smell and a remarkable ability to follow their noses through the ocean, right to their next meal. Now, researchers reporting online in the June 10th issue of Current Biology, a Cell Press publication, have figured out how the sharks manage to keep themselves on course. It turns out that sharks can detect small delays, no more than half a second long, in the time that odors reach one nostril versus the other, the researchers report. When the...

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2010-05-18 10:12:18

The ancestor of all hammerhead sharks probably appeared abruptly in Earth's oceans about 20 million years ago and was as big as some contemporary hammerheads, according to a new study led by the University of Colorado at Boulder. But once the hammerhead evolved, it underwent divergent evolution in different directions, with some species becoming larger, some smaller, and the distinctive hammer-like head of the fish changing in size and shape, said CU-Boulder Professor Andrew Martin of the...

ef46e1f5e92a6856564cd66c94c609101
2010-03-25 06:48:28

Thursday, the last day of the UN wildlife meeting in Doha, could be the turnaround day for the protection of elephants and two species of sharks that were earlier disregarded by delegates at the 175-nation Convention on International Trade in Endangered Species (CITES). The final plenary session of CITES validates decisions made over the previous 12 days, but a motion to reopen the debate supported by a third of the delegates could lead to a new vote, giving hope for conservationists. The...

2010-03-23 09:29:00

Rejection of Scientific Data for Other Threatened Sharks Undermines Conservation Effort DOHA, Qatar, March 23 /PRNewswire-USNewswire/ -- Government delegates attending the meeting of the Convention on International Trade in Endangered Species (CITES) voted today to list porbeagle sharks in Appendix II of the treaty, but rejected protections for three other vulnerable shark species. An Appendix II listing requires exporting countries to ensure that international trade is legal and will not...

f82ce23d041c62d0477bbc0c046f9cfa
2009-12-01 07:50:00

These breakthrough findings provide strong evidence for enacting international trade protection for hammerhead sharks at the March 2010 CITES meeting in Qatar Millions of shark fins are sold at market each year to satisfy the demand for shark fin soup, a Chinese delicacy, but it has been impossible to pinpoint which sharks from which regions are most threatened by this trade. Now, groundbreaking new DNA research has, for the first time, traced scalloped hammerhead shark fins from the...

4a4390acdd3470eed65c802e6d76fc301
2009-11-27 09:15:00

Hammerhead sharks are some of the Ocean's most distinctive residents. 'Everyone wants to understand why they have this strange head shape,' says Michelle McComb from Florida Atlantic University. One possible reason is the shark's vision. 'Perhaps their visual field has been enhanced by their weird head shape,' says McComb, giving the sharks excellent stereovision and depth perception. However, according to McComb, there were two schools of thought on this theory. In 1942, G. Walls speculated...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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