Tag: "sharks" at biology news
Scripps scientists look deep inside sharks and their high-performance swimming system
...irst exploration of muscle dynamics in live lamnid sharks
(a group that includes the great white and mako), ...sic locomotor design with tunas. "Tunas and lamnid sharks
have a body form that represents an extreme in biomechanical design for high-performance swimming," ...
Fish no exception to trend in marine-organism disease
...gh not in actual disease. Only sea grasses and sharks
display no apparent increases in disease levels; both groups have disease, but it does not appear to be increasing. Ward worked with collaborators to develop a literature-based research method to test the increasing-disease hypothesis, a widespread...
Shark guide probes uncharted waters
...clear swimming areas and rates T.V. news coverage, sharks
have more to fear from humans than vice versa. Along with other highly migratory speciestunas and billfishesshark populations have been depleted partly by overfishing and partly by natural factors. Saving these economically valuable fishes is importa...
Breakthroughs in acoustic tracking shine new light on the lives of fish
...ntially farranging species such as cod, salmon and sharks
may be more predictable than scientists previously...tected areas." Tracking results show that as young sharks
grow even just a few inches over the course of a few months, they can triple the amount of habitat...
International science team tracks ocean predators around the globe
...havior of large migratory fishes, including tunas, sharks
and billfishes. She and her team of doctoral stude...in beginning to unfold, and it's amazing." Tunas, sharks
and seals And now, in addition to tagging bluefin, Block and her TOPP colleagues from NMFS and ICCA...
UF study: World shark attacks sink again, may signal long-term trend
...erm trend, such as the possibility there are fewer sharks
and people together in the water where they could ... that comes to mind is that there are simply fewer sharks
out there in the water," he said. "We know that shark populations have declined internationally beca...
Mercury in ocean fish may come from natural sources, not pollution
...t longer-lived predators like tuna, swordfish and sharks
generally have higher levels. The U.S. Food and Drug Administration warns pregnant women against eating large amounts of fish to avoid harming an unborn child's developing nervous system. Mercury enters the environment naturally and through in...
Taming Jaws: Scientists lift great white sharks from ocean to fit with satellite tags
...rgest and most maligned carnivores. So far, seven sharks
ranging up to eleven-and-a-half feet long and over...ne of the world's hot spots for great whites. The sharks
are baited with a hook and line, and quickly hoisted into a specially constructed cradle. At that p...
How many fish in the sea? Census of Marine Life launches first report
...hed to the dorsal fins of three species of Pacific sharks
are electronic tags that regularly communicate with satellites, enabling documentation of migration patterns. Similar technology has recorded trans-Pacific migrations of bluefin tuna. These fish, sharks, turtles and elephant seals are helping Census...
Startling deep-sea encounter with rare, massive Greenland shark
...veral minutes. Though in the early 1900s Greenland sharks
were fished commercially, theyhave rarely been cap...mersible in the deep sea. Past encounters involved sharks
swimming nearthe surface or attracted by bait. Greenland sharks, also called sleeper or gurry shark...
White shark attack shows they're not man-eaters
...ifornia supports his belief that adult great white sharks
are selective hunters that would rather eat fat seals than bony human beings. Deborah Franzman was swimming at the surface among a group of pinnipeds -- seals or sea lions -- on Aug. 20 when a great white shark, estimated to be 15 to 18 feet long, gr...
Research: Coral reefs' decline actually began centuries ago
...ern. First, people deplete large predators such as sharks
and large herbivores, which tend to be both easy to kill or capture and slow to rebuild their populations. Next to go are smaller animals, such as small fishes, followed last by sea grasses, corals and other so-called "architectural" parts of the cor...
Waiter, there's a shark in my soup
...e capability to accurately distinguish great white sharks
from other species, even when only dried fins or m...ilable. The shark fin trade in particular has put sharks
under increased fishing pressure, depleting populations of many species. The scientists' study is p...
New marine protected area to safeguard world's largest fish
...f Nature were the first to discover the rare whale sharks
that congregate in the area and became determined ... entire region is the whale shark. The large whale sharks
can live to 100 years, grow to 50 feet and weigh as much as 27,000 pounds. Although found in tropica...
Mercury in packaged whale meat across Japan may be a major health problem
...longer-lived predators like odontocetes, tuna and sharks
are the final repositories for many pollutants because of their position at the top of the food chain. Endo reported the current findings at a meeting of the Food Hygiene Society of Japan in Tokyo last week. The International Fund for Animal Welfare...
Nature cover story - Only 10% of all large fish are left in global ocean
...ay sound drastic, but consider a world where tuna, sharks
and swordfish, are merely memories. "We are in ma... point of no return. I want there to be hammerhead sharks
and bluefin tuna around when my five-year-old son grows up. If present fishing levels persist, these...
Troubling news about sea otter deaths
...ctions were four times more likely to be killed by sharks
than those without. "This parasite invades the otter's brain and can cause neurological problems such as seizures," Kreuder said. "That could make the otters confused and disabled. They would be less able to evade sharks, more likely to swim to unpro...
Shark fin trade greater than previously thought, study finds
...e markets is critical for marine conservation, for sharks
and all other commercially valuable species, said Shelley Clarke, lead author of the recently published Trade in Dried Asian Seafood. Improved monitoring at the local level in key seafood trading centers like Hong Kong is the key to correcting inac...
World shark attacks sink for second year in row, UF research shows
...dence of shark attacks include fewer bait fish for sharks
in shallow waters where people usually swim, or rainy weather and colder water temperatures during tourist seasons deterring people from entering the ocean, he said. As in recent years, the bulk of the attacks 82 percent were in North American wat...
Fluid flow technology takes a cue from fast-swimming sharks
... of rushing water, which inhibits the sharks
hearing. If that were true, the riblets could enable sharks
to better hear signs of prey. To simulate riblets in the lab, the engineers li...
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