Once pushed to the brink of extinction by overfishing, bluefin tuna has experienced a spectacular rebound in recent years. But can it survive the onslaught of climate change?

Icebergs produce some of the loudest natural noises in the oceans. Can we learn anything about their birth, life and death by listening in?

From erecting seawalls to selling citizenship, vulnerable small islands are taking sometimes drastic measures to protect themselves from rising seas, storms and economic devastation.

When scientists peered beneath one of Antarctica's floating ice shelves, they were surprised to find an upside-down landscape of peaks, valleys and plateaus.

Facing erasure due to climate change, the Pacific Island nation of Tuvalu is digitally backing up everything from its houses to its trees as it endeavors to save whatever it can.

Could lessons from the ancient past help us protect the world's oceans?

Scientists are racing to update the imperfect system we rely on to warn just how deadly a storm will be.

Marine turtles spend almost their entire lives at sea – but little is known about the paths they take. Now, satellites are helping scientists map their movements.