Ocean

Along Western Australia's remote coast, Ningaloo Reef offers a rare experience: a multi-day kayak trip into a world of extraordinary beauty and biodiversity.

In Namibia, a group of desert lions have left their traditional hunting grounds for the Atlantic coast and are now thriving as the world's only maritime lions.

When hurricanes pass over the ocean they churn up creatures from the deep – a chance to feast for predators brave enough to weather the storm.

The most remote inhabited island is racing to protect its seas – and only source of income.

Humans have a long history of diving to forage from the seabed and today elite freedivers are reaching greater depths than ever. Some researchers argue humans belong in the sea.

The UN world court is coming to a conclusion on its largest ever case, which considers states' legal responsibilities to tackle climate change.

Sea cucumbers, or 'janitors of the sea', scour and clean the seafloor, allowing other animals to thrive. In the Philippines, a group of women stand guard to help them multiply.

A volcanic eruption sank Aenaria nearly 2,000 years ago. Now, underwater tours and ongoing excavations are bringing Ischia's fascinating history back to the surface.