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

A nuclear-powered submarine of the Royal Navy has resurfaced and returned to port after completing a record-breaking 204 days at sea. After spending over six months underwater, the Vanguard-class ...

A hidden ecosystem of giant sea spiders, octopuses, and other stunning sea creatures shows how life can flourish even when sealed off from the surface by a thick layer of ice.

But why did this submarine torpedo a patrol boat belonging to the French Navy? Don’t worry, as this was a test of a new cutting-edge weapon. As reported by Futura-sciences, last December, a French ...