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Latest Grey reef shark Stories

Great Barrier Reef Shark Populations Impacted By Coral Health And No-fishing Zones
2014-09-15 03:50:53

PLOS Sharks in no-fishing zones in the Great Barrier Reef (GBR) Marine Park are more abundant when the coral is healthy, according to a study published September 10, 2014 in the open-access journal PLOS ONE by Mario Espinoza from James Cook University, Australia and colleagues. Shark species that use coral reefs may be under pressure from fishing, habitat degradation, and climate change. The authors of this study were interested in understanding the factors that affect the distribution...

Dive Guides Monitoring Sharks On Coral Reef At Similar Level To Telemetry
2014-04-25 03:27:50

PLOS Shark data collected by citizen scientists may be as reliable as data collected using automated tools, according to results published April 23, 2014, in the open access journal PLOS ONE by Gabriel Vianna from The University of Western Australia and colleagues. Shark populations are declining globally, and scientists lack data to estimate the conservation status of populations for many shark species. Citizen science may be a useful and cost-effective means to increase knowledge of...

Study Finds Drastic Decline in Reef Shark Population
2012-04-29 04:40:15

An international team of marine scientists has discovered that the population of reef sharks living the Pacific Ocean have decreased by at least 90% over the past several decades, claims a new study published online Friday in the journal Conservation Biology. As part of the study, a group of eight scientists used underwater surveys collected over the past 10 years from 46 different US Pacific islands and atolls as part of the National Oceanic and Atmospheric Association (NOAA) Pacific Reef...

sharksScientists Provide First Large-Scale Estimate of Reef Shark Losses in The Pacific Ocean
2012-04-27 07:39:01

Tales from towed diver surveys demonstrate sobering truth about these top predators 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. This is particularly true for oceanic species. However, until now, a lack of data prevented scientists from properly quantifying the status of Pacific reef sharks at a large geographic scale....

Image 1 - Analysis Confirms Sharks Are In Trouble
2011-09-28 08:05:38

Sharks are in big trouble on the Great Barrier Reef and worldwide, according to an Australian-based team who have developed a world-first way to measure rates of decline in shark populations. “There is mounting evidence of widespread, substantial, and ongoing declines in the abundance of shark populations worldwide, coincident with marked rises in global shark catches in the last half-century,” say Mizue Hisano, Professor Sean Connolly and Dr William Robbins from the ARC Centre...

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2010-06-10 08:18:20

Stanford marine scientists and anthropologists are developing strategies for sustainable fishing by comparing two remote coral reef ecosystems "“ one inhabited, the other a "no-catch" reserve. Coral reefs "“ kaleidoscopes of pink anemones and silver sharks "“ are the planet's most colorful ecosystems and among its most endangered, say marine scientists. As global warming raises ocean temperatures, many corals blanch and die, a phenomenon called "coral bleaching." And pumping...

2010-03-09 10:58:00

WASHINGTON, March 9 /PRNewswire-USNewswire/ -- In a move lauded by the Pew Environment Group, the Maldives today declared its exclusive economic zone (EEZ), 90,000 square kilometers of the Indian Ocean, as a shark sanctuary free from all shark fishing and also banned all imports and exports of shark fins. The Maldives is home to more than 30 shark species, including the scalloped hammerhead, the most prominent shark to be considered for protection at the upcoming meeting of the Convention...

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2010-02-22 07:37:54

Australia's Great Barrier Reef (GBR) is showing an extraordinary range of benefits from the network of protected marine reserves introduced there five years ago, according to a comprehensive new study published in the Proceedings of the US National Academy of Sciences. The scientific team, a "Ëœwho's-who' of Australian coral reef scientists, describes the findings as "a globally significant demonstration of the effectiveness of large-scale networks of marine reserves". "Our data...


Latest Grey reef shark Reference Libraries

39_d9fb39d1944d8d5844eb0b903f70e8f1
2007-03-13 10:20:57

The Blacktip reef shark, Carcharhinus melanopterus, is a shark of tropical and warm temperate seas. It is often confused with the Blacktip shark, Carcharhinus limbatus. Distribution One of the most common sharks found in shallow, sometimes as shallow as 11.81 in (30cm) water around coral reefs of Indo-Pacific and Caribbean waters. The water they swim in is usually 70"“80º F (20"“27° C). Blacktip reef sharks do not venture into tropical lakes and rivers far from the ocean....

39_728617d02c18e51c1bb2e73640fb478a
2007-03-13 10:00:09

The Silky shark, Carcharhinus falciformis, is a large pelagic shark of tropical and warm temperate seas. Distribution This species is found worldwide in tropical and warm temperate > 73.4 °F (> 23 °C) seas. It is usually pelagic, but sometimes approaches the coast, especially at remote offshore islands. It is found to depths of at least 1640.42 ft (500 m). Appearance This shark has a large 'typical' shark body, slender with 'silky' smooth skin. It is brown-grey dorsally and...

39_1b7f137a05015a221ff6e56325631669
2007-03-13 09:57:29

The Copper shark, Bronze whaler, or Narrowtooth shark, Carcharhinus brachyurus, is a large shark of the Carcharhinidae family, found in subtropical seas and oceans worldwide, except the eastern coast of North America and the northern Indian Ocean. Their length is up to about 11.48 ft (3.5 m) and they can weigh up to 661.39 lb (300 kg). The Bronze whaler has a blunt broad snout, narrow bent cusps on the upper teeth, and no interdorsal ridge. They are gray to bronze in color on the back, and...

39_2c55dcad7c4d439939c7938cfe2dec9d
2007-03-13 09:53:18

The Gray reef shark, Carcharhinus amblyrhynchos, is one of the most common sharks in Indo-Pacific waters, from the Red Sea to Easter Island. It is found at depths down to about 820.21 ft (250 m) in lagoons and close to islands and coral reefs. As its name suggests, the shark is gray overall, with a white underside. The tips of most fins, except the first dorsal fin, are darker, and the trailing edge of the caudal fin has a prominent black margin. Some individuals have a white pattern on...

39_36b8ebf1846d1866e1eb851e590a2784
2007-03-13 09:46:38

The Silvertip shark, Carcharhinus albimarginatus, is a fairly large and slender shark found at or close to offshore remote island reefs. The Silvertip shark is named because of its white marking on all fins. The Silvertip shark is found near reefs at depths to about 2624.67 ft (800 m), mostly below 98.43 ft (30 m), in the Red Sea and along the coasts of East Africa, Madagascar, Seychelles, Aldabra Group, Mauritius and the Chagos Archipelago, off southern Japan to northern Australia and French...

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Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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