Scientists discover underwater mountain ranges, golden towers of coral, and never-before-seen sea creatures.

Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological possibilities.

Why does a Caribbean angelfish sometimes resemble its Indo-Pacific cousin, even though they have never lived in the same ...

In a lab at the University of Miami, there are tanks of knobby, tan-colored corals from Florida, Honduras and the Cayman Islands. They've been drafted into a sort of coral Olympics, as scientists look ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Just as the world’s zoos breed critically endangered animals in captivity to repopulate the wild, scientists are building a global effort to freeze corals for reef restoration. Mary Hagedorn Coral ...

Scientists mapped the largest deep-sea coral reef, which stretches over millions of acres off the Atlantic from Florida to South Carolina and is bigger than Vermont, according to the news release. "It ...

This story was co-published with Grist as part of their Proof of Concept video series profiling the science and scientists behind some of the environment’s most surprising research. While the Gulf of ...

In April 2019, a marine heat wave struck a coral reef on the island of Moorea in French Polynesia, killing much of the coral and the beneficial algae that colonized it. This "bleaching" event reduced ...