A new fossil discovered in Tunisia represents the oldest known ancestor of modern-day sea cows, supporting the African origins of these marine mammals. The find is described in research published January 16 in the open access ...
Archaeology
Jan 16, 2013
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Humpback whales are famed for their songs, most often heard in breeding season when males are competing to mate with females. In recent years, however, reports of whale songs occurring outside traditional breeding grounds ...
Plants & Animals
Dec 19, 2012
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Walrus use sea ice as a reproductive, migration and resting habitat. However, as sea ice melts and recedes, this marine mammal increasingly is threatened.
Earth Sciences
Dec 14, 2012
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New evidence shows there is no cross-breeding between endangered manatees in Puerto Rico and those in Florida, resulting in less genetic diversity in Puerto Rico's small manatee population and impacting its odds of survival.
Plants & Animals
Oct 26, 2012
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Dolphins sleep with only one half of their brains at a time, and according to new research published Oct. 17 in the open access journal PLOS ONE, this trait allows them to stay constantly alert for at least 15 days in a row. ...
Plants & Animals
Oct 17, 2012
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White sharks, the largest predatory sharks in the ocean, are thought of as apex predators that feed primarily on seals and sea lions. But a new study by researchers at the University of California, Santa Cruz, shows surprising ...
Plants & Animals
Sep 28, 2012
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(Phys.org)—Crocodiles are often thought of as living fossils, remaining unchanged since the time of the dinosaurs. But scientists have shown this is not always the case and that 150 million years ago, their feeding mechanisms ...
Archaeology
Sep 19, 2012
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(Phys.org) -- An evolutionary leap made at the bottom of the ocean over 500 million years ago gives new insights into the causes of human diseases such as diabetes, cancer and neurological disorders, according to newly published ...
Biotechnology
Jul 25, 2012
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(Phys.org) -- Environmental scientists at Harvard have discovered that the Arctic accumulation of mercury, a toxic element, is caused by both atmospheric forces and the flow of circumpolar rivers that carry the element north ...
Earth Sciences
May 21, 2012
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Researchers at the University of California, Santa Cruz, who pioneered the use of satellite tags to monitor the migrations of elephant seals have compiled one of the largest datasets available for any marine mammal species, ...
Plants & Animals
May 15, 2012
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