News tagged with sharks
Related topics: fish , species , coral reefs , fossil
Beamed-up lemon shark shows research promise (w/ Video)
(Phys.org) -- Not everyone is game enough to fit a laser beam on to a shark’s head and live to tell the tale intact, but not everyone is a marine biologist, either. Last month, marine biologist Luke Tipple, ...
May 06, 2012 |
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Taiwan uses DNA mapping to save endangered sharks
Taiwan has begun testing DNA from shark fins sold in local markets in a bid to protect endangered species such as great whites and whale sharks, an official from the Fisheries Agency said Wednesday.
May 23, 2012 |
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96 percent of vertebrates -- including humans -- descended from ancestor with sixth sense
(PhysOrg.com) -- People experience the world through five senses but sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense: They can detect weak electrical fields in the water and use ...
Oct 11, 2011 |
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Mole rat dental structure similar to a shark
(PhysOrg.com) -- Sharks are capable of continually growing new teeth. As the teeth age, they fall out and new ones move forward similar to that of a tooth conveyor belt. Humans, and most mammals, on the other ...
Oct 11, 2011 |
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Fossil feces point to a shark attack 15 million years ago
(PhysOrg.com) -- Paleontologists Stephen Godfrey and Joshua Smith have been studying marine fossils in the Maryland area of Calvert Cliffs for many years, and Godfrey has catalogued over 26,000 items found ...
Other Sciences / Archaeology & Fossils
Mar 26, 2010 |
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Reef shark populations in steep decline: study
Many shark populations have plummeted in the past three decades as a result of excessive harvesting – for their fins, as an incidental catch of fisheries targeting other species, and in recreational fisheries. ...
Apr 27, 2012 |
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Dynasty of plankton-eating giants from Age of Dinosaurs revealed in new study
(PhysOrg.com) -- Giant plankton-eating fish filled the prehistoric seas for more than 100 million years before they were wiped out in the same event that killed off the dinosaurs, new fossil evidence claims.
Other Sciences / Archaeology & Fossils
Feb 18, 2010 |
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Amazing skin gives sharks a push
Shark skin has long been known to improve the fish's swimming performance by reducing drag, but now George Lauder and Johannes Oeffner from Harvard University show that in addition, the skin generates thrust, ...
Feb 09, 2012 |
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Fossil fish illuminates evolution of plankton-eating
Animals from very different groups that developed independently into plankton-eating giants took similar evolutionary steps along the way, new research shows.
Feb 15, 2012 |
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Plesiosaur a victim of shark attack
(PhysOrg.com) -- An 85 million-year-old plesiosaur fossil has been found with over 80 shark's teeth, suggesting the animal was the victim of sharks in a feeding frenzy. The find is perhaps the most spectacular example of ...
Other Sciences / Archaeology & Fossils
Oct 06, 2009 |
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Study of shark virgin birth shows offspring can survive long term
Shark pups born to virgin mothers can survive over the long-term, according to new research published Jan. 25, 2010 in the Journal of Heredity. The study shows for the first time that some virgin births can result in via ...
Jan 25, 2010 |
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Hammerhead shark double whammy
Identity confusion between a new, yet unnamed shark species, originally discovered off the eastern United States by Nova Southeastern University Oceanographic Center (NSU-OC) researchers, and its look-alike ...
Mar 26, 2012 |
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Scientists film hagfish anti-shark slime weapon
(PhysOrg.com) -- The hagfish found in New Zealand’s deepest waters is grotesque enough, thanks to its scary protruding teeth straight from a horror film. Now, scientists have witnessed the full ...
Oct 28, 2011 |
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Weed-eating fish 'help protect jobs, livelihoods'
Jobs, livelihoods and ecotourism industries can benefit from having a diverse supply of weed-eating fish on the world's coral reefs, marine researchers say.
May 08, 2012 |
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The Ichthyosaurs survived longer than was thought
(PhysOrg.com) -- The discovery of a new species of ichthyosaurs considerably changes our understanding of the evolution and the extinction of these dinosaur age sea reptiles, according to a study published ...
Other Sciences / Archaeology & Fossils
Jan 05, 2012 |
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