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?

A new thermal imaging drone is helping conservationists count seals on the Calf of Man.

Two endangered green sea turtles underwent a CT scan to assess their overall health.

A volunteer marine life medic wants fireworks to be restricted, saying their debris is dangerous.

The coastal structures attract everyone from anglers to cold dippers, and are teeming with wildlife.

Deputies support the environment minister's proposals, but reject plans for larger conservation areas.

Last year, the Java stingaree became the first fish to be declared extinct as a result of human actions. Could there soon be others?

Thousands of shipwrecks lie on the UK seabed, many forgotten and many still mysteries.