News tagged with sharks
Sharks under threat as environmental change bites hard
Nov 17, 2009 |
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(PhysOrg.com) -- Their size and fearsome appearance have made them the stuff of nightmares, but new research just published suggests that sharks may not be as tough as they appear.
Tags reveal white sharks have neighborhoods in the north Pacific
Nov 03, 2009 |
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The white shark may be the ultimate loner of the ocean, cruising thousands of miles in a solitary trek, but a team of researchers has discovered that the sharks have maintained such a consistent pattern of ...
Plesiosaur a victim of shark attack
Other Sciences / Archaeology & Fossils
Oct 06, 2009 |
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(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 ...
Could stressed out sharks save more fish? (w/ Video)
Oct 02, 2009 |
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(PhysOrg.com) -- Marine biology graduate student Austin Gallagher has studied the dwindling shark population around the world—from the waters of the South Pacific to those off Southern California.
Loss of top predators causing surge in smaller predators, ecosystem collapse
Oct 01, 2009 |
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The catastrophic decline around the world of "apex" predators such as wolves, cougars, lions or sharks has led to a huge increase in smaller "mesopredators" that are causing major economic and ecological disruptions, ...
Palau creates world's first shark sanctuary
Sep 25, 2009 |
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(AP) -- The tiny Pacific nation of Palau is creating the world's first shark sanctuary, a biological hotspot to protect great hammerheads, leopard sharks, oceanic whitetip sharks and more than 130 other species ...
3 more great white sharks tagged off Mass. coast
Sep 08, 2009 |
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(AP) -- A total of five great white sharks have now been electronically tagged off Cape Cod, allowing experts to track their movements and learn more about their migratory habits.
Algae-Based Biofuel From Fish
Sep 01, 2009 |
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Right now, when biofuel is produced using algae, cultures are grown and then processed into fuel. But the process is expensive and difficult. Now a company in Texas, LiveFuels, Inc., hopes that it will be ...
Scientists shed new light on behavior of shark 'tweens' and 'teenagers'
Aug 24, 2009 |
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(PhysOrg.com) -- A long-term field and DNA study by the Institute for Ocean Conservation Science at Stony Brook University, University of Miami, Field Museum of Chicago and others has shown that young lemon ...
Scientists conduct shark survey off US East Coast
Aug 13, 2009 |
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Sandbar, dusky and tiger sharks are among dozens of shark species living in the coastal waters off the U.S. East Coast. Little is known about many of the species, but a survey begun nearly 25 years ago is helping scientists ...
Greenland shark may become new source of biofuel
Jul 20, 2009 |
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The Greenland shark, one of the largest species of sharks, is a nuisance to fishermen and its meat is toxic to humans, but researchers now hope the flesh can be used to create a biofuel for Inuits.
Negligible impact on public safety from shark cage diving operations
Jul 15, 2009 |
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A study by five university researchers -- including four from the University of Hawaii at Manoa -- concludes that existing shark cage diving enterprises in Hawai'i have a negligible effect on public safety.
Swedish researcher finds missing piece of fossil puzzle
Other Sciences / Archaeology & Fossils
Jul 13, 2009 |
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The mode of reproduction seen in modern sharks is nearly 400 million years old. That is the conclusion drawn by Professor Per Erik Ahlberg, Uppsala University, from his discovery of a so-called "clasper" in a primitive fossil ...
Third of open ocean sharks face extinction: study
Jun 25, 2009 |
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A third of the world's open water sharks -- including the great white and hammerhead -- face extinction, according to a major conservation survey released Thursday.
Geographic profiling applied to track hunting patterns of white sharks in South Africa
Jun 22, 2009 |
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Predation is one of the most fundamental and fascinating interactions in nature, and sharks are some of the fiercest predators on Earth. However, their hunting pattern is difficult to study because it is rarely ...
