Could it be that the humble sea urchin has come to the rescue? Sam Judd finds that the latest technological breakthrough for waging war on carbon emissions has the spiny sea creatures to thank.

Up to 900 dolphins have been killed by villagers in the Solomon Islands, who claim it was an act of retaliation for not being paid money they were promised.

A bid that would have safe-guarded the Ross Sea's pristine eco-system with the world's largest marine protected area has failed.

A two-and-a-half year expedition by the ship on which Sir Peter Blake was murdered continues his work under the oceans.

Sam Judd looks at the effect of plastic and toxins on marine life - particularly killer whales.

It was a shark attack that started it all. The 3m tiger shark ripped into one of Sam Judd's legs during a surfing trip to the Galapagos Islands in 2007.

Little blue penguin nests are being ruined by ignorant beachgoers trashing their burrows. Researchers are concerned that the rubbish could be fatal.