An "unprecedented" toxic algae bloom is occurring along the coast of Southern California and poisoning marine animals, according to marine rescue experts.

In the past week, there have been more than 50 dead and dying dolphins found along the L.A. County coast. Experts say it's due to a neurotoxin called domoic acid.

If you’ve spent a lot of time outdoors in New England, you’ve likely crossed paths with, and probably stepped on, lichens.

Heat stress has triggered a global coral bleaching crisis, affecting 84% of reefs and threatening marine biodiversity and ...

Harmful bleaching of the world's coral has now grown to include 84% of the ocean's reefs in the most intense event of its ...