A mysterious duck-like sound in the ocean is finally identified -- but other puzzling noises remain unsolved.
A pesky species of icky algae is infiltrating parts of eastern Canada due to global warming.
Jakobshavn Isbrae glacier broke its own speed record again, quadrupling its summer run to the sea between the 1990s and 2012.
They're not the work of World War II bombs or aliens or fairies. Instead, mysterious underwater rings spotted off the coast of Denmark are the result of poison.
A new modeling study reveals how giant internal waves rise from the deep.
Nuclear pollution can't be ruled out as part of the syndrome that's attacking starfish, a scientist says.
About 6 million years ago, a mile-high field of salt formed across the entire Mediterranean seafloor.
Google Street View Oceans and is now touring the Caribbean.
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