Threat to ocean sharks increases
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Several species of ocean-going shark are more threatened than previously thought, scientists conclude.
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Scientists have issued their strongest warning so far this year that unusually warm Caribbean Sea temperatures threaten coral reefs that suffered widespread damage last year in record-setting heat.
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A three-metre (10-foot) shark menaced a children's sailing regatta in shallow Australian coastal waters, biting a hole in an inflatable patrol dinghy that attempted to drive it away, event organisers said.
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The risk of wars being fought over water is rising because of explosive global population growth and widespread complacency, scientists said on Friday.
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ADELAIDE, Australia - The hunt for the great white shark that killed a teenage surfer here this week was stepped up Saturday despite an appeal by his family not to kill the giant predator.
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ADELAIDE, Australia: Two great white sharks attacked and killed a surfer while his friends watched in horror Thursday off a popular beach in the southern Australian city of Adelaide, authorities said.
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Scientists say a bacterial disease that can affect mammals, including humans, may be behind an increase in sea lions found dead on Oregon beaches recently.
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Ancient fish could bite a shark in two  Sharks were not always the top predators in the ocean.
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Survivors from the gargantuan tsunami that swept across Asia and killed more than 23,000 will face a host of new threats in the coming days and weeks: viruses and bacteria in the water, diseases
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Waves and sharks aren't the only dangers at the beach. More than two dozen young people have been killed over the last decade when sand holes collapsed on them, report father-and-son doctors who have made warning of the risk their personal campaign.
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Environmentalists urged fishing nations Thursday to do more to protect the rare Patagonian toothfish, dubbed the "white gold" of the sea which is being driven to extinction by rampant poaching.
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More than 60 countries agreed Sunday to ban the killing of sharks for their fins in the Atlantic Ocean, a move that conservationists hope will increase protection of threatened species around the world.
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The next terrorist threat may come from the deep. In recent years, several homeland security alerts have focused on the danger of scuba-equipped terrorists targeting docked Navy vessels or ocean-side nuclear plants. Now the U.S. military is quietly developing a new generation of underwater weaponry.
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A shark is spotted off the coast of south-eastern Spain, the second such sighting in as many weeks.
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Sharks will migrate into Antarctic waters if warming continues, threatening unique marine animals, scientists warn.
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The number of endangered Steller sea lions counted between the Gulf of Alaska and the tip of the Aleutian Chain has increased again, according to new data released by the National Marine Fisheries Service.
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Environmental groups call on Australia to classify the Coral Sea as a marine park to ward off illegal shark fishermen.