There are 8000 shipwrecks off Australia alone, many more still to be found. Yet stunning discoveries still happen. What does ...

NBC News joined a NATO flotilla as it sailed the icy sea hunting Russian saboteurs accused of targeting undersea cables.

Pacific oysters are adapting to less salty waters and may soon spread into the Baltic Sea, aided by warmer seas and genetic ...

Picture an ocean world so deep and dark it feels like another planet—where creatures glow and life survives under crushing ...

Antarctica has lost 150 billion tons of ice mass on average every year. The thinning ice glaciers have raised alarms about ...