The world has reached the first of many Earth system tipping points that will cause catastrophic harm unless humanity takes urgent action, report warns

Conservationists and a Mauritian fishers roll out a five-year project to replant seagrass — the ‘lungs’ of the ocean

Activists have pointed out interesting ways that people can learn something new and have an adventure while doing their bit to save the ocean.

There are also early warning signs of climate change on South Africa’s coral reefs as elevated sea temperatures drive large scale bleaching

The deep oceans are a fragile final frontier, largely unknown and untouched but mining companies and governments — other than those in Africa — are eying its mineral riches

Carbon dioxide is changing the sea bed and the damage humans will do has not yet been seen

Experts have warned that deforestation increases runoff into the reef, reducing water quality and the light needed for coral growth

​More than 11 billion pieces of plastic larger than five centimetres wide are littering coral reefs across the Asia-Pacific region

​Coral bred in one part of the Great Barrier Reef was successfully transplanted into another area in a project that could restore damaged ecosystems

With less than 10% of the Caribbean’s reefs showing live coral cover, one of the world’s most important ecosystems is in danger of utter devastation.

The world’s coral reefs could be wiped out by 2050 unless urgent action is taken to stop threats posed to the "rainforests of the sea".

With its pleasure boats and tourist restaurants, the Indonesian island of Nusa Lembongan looks little like the edge of a great wilderness.

An oceanarium resort planned near the world-famous Sipadan diving spot off Malaysian Borneo could spell disaster for the region’s coral reefs.

Dainty blue fish dart around coral shaped like moose antlers near the Mexican resort of Cancun, but sickly brown spots are appearing.