Equatic is among a wave of start-ups exploring how the ocean could be harnessed to capture and store carbon. But not everyone is sure it's such a good idea.

Global temperatures rose and extreme weather ramped up, but there were also some significant breakthroughs for the climate this year.

The world's biggest iceberg is drifting towards the Atlantic Ocean after being stuck near Antarctica.

Humpback whales have been making a conservation comeback – but warming seas are putting their recovery at risk.

Over the course of 10 years, the Billion Oyster Project, one of New York's most ambitious rewilding initiatives, has planted 150 million larvae in its harbour. Did it work?

The world's largest icebergs break off the Antarctic ice sheet. As they drift and melt in the Southern Ocean, they create a unique environment around them.

Nature is in rapid decline but here are five ways to make positive change.

Ninety-nine percent of the world's digital communications rely on subsea cables. Fixing them keeps us all connected – and has changed our understanding of the ocean.