The discovery that what was thought of as one coral species is really two brings up the question: What exactly is a species?

Researchers have discovered that algae called dinoflagellates can reproduce through sex. The finding could help protect corals from climate change.

Researchers have discovered that algae called dinoflagellates can reproduce through sex. The finding could help protect corals from climate change.

Microscopic algae may evolve in tandem with the corals they inhabit, so each partner is fine-tuned to meet one another's needs, according to a new study.

New research suggests some corals have mangroves to thank for their ability to thrive.

Predators like parrotfish and pufferfish pose much more of a threat to young coral than previously believed.

Runoff from two Houston floods carried human waste onto coral reefs more than 100 miles offshore, research finds.

Runoff from two Houston floods carried human waste onto coral reefs more than 100 miles offshore, research finds.

Human activity doesn't affect all species the same, according to a new global assessment that finds corals are the most affected marine organism on Earth.