Sea star wasting disease is just one more harbinger of weakened oceans.
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Billions of by-the-wind sailors, also called Velella velella, could wash ashore in coming months because of favorable water temperatures and onshore winds.
The longest consecutive train of Kelvin-Helmholtz waves ever seen in the sea was spotted in the Atlantic Ocean's Romanche Fracture Zone.
This week, ocean explorers mourned the loss of a legend in their field: Eugenie Clark, a marine biologist and authority on sharks.
The Pacific was a planetary air conditioner for the past two decades, but the relief may soon end, a new study finds.
Mysterious flooding and high tides along the East Coast in 2009 and 2010 now have an explanation: a major change in the Atlantic Ocean's wind patterns and warm-water currents.
One of the richest beds of manganese nodules ever found on the Atlantic seafloor was discovered last month while trolling for deep-sea creatures between South America and Africa.
Melting glaciers pose another threat beyond sea level rise. They will dump massive amounts of organic carbon into the world's oceans, altering ecosystems.
The melting of Earth's polar ice came into starker relief in 2014, with real implications for sea level rise.
California's rain shortfall isn't unprecedented, but its parched soils are. Researchers blame the heat.
The demand for global trade is driving a huge growth in cargo shipping in the world's oceans, with nearly four times as many ships at sea than in 1992.
The mystery surrounding a gruesome disease that affects starfish on the Pacific coast might finally be put to rest.
A new gravity map of Earth's seafloor fills in blanks and will reveal its geologic history in greater detail.
The leader of the COASST ocean conservation group says why her work makes her feel like Jacques Cousteau.
A small but mighty ocean bacterium can load up on scarce resources when food supplies run low. Scientists can track these bacterial proteins in seawater to detect low nutrient levels.
Lurking some 3.2 miles (5.1 kilometers) beneath the Pacific Ocean, a massive mountain rises up from the seafloor, say scientists who discovered the seamount using sonar technology.