The government of Tristan da Cunha — the most remote inhabited islands in the world — committed to protecting 90 percent of its territory’s waters, creating the largest marine protected area in the Atlantic.

A team of researchers recently discovered three new species of black coral in the depths of the North Pacific — but deep-sea mining could threaten them.

Here are three recent conservation success stories you should know about.

Coral reefs on the high seas could offer a lifeline for the world's dying reefs, a new study finds.

You can help prevent an even more plastic-infested future for our oceans. Here are 5 tips to get you started from Conservation International's diving guru.