The rich resources of Pacific kelp forests helped humans populate the Americas. Now depleted by as much as 95 percent, they ...

Kelp may be one of the first species to show how coastal ecosystems will respond to the L.A. fires. These forests of fast-growing brown algae provide food and habitat for hundreds of marine ...

Arctic kelp absorbs metals from melting glaciers, increasing mercury levels by 72%. This could harm marine life and fisheries ...

A giant sea bass swims amid kelp at the Aquarium of the Pacific in Long Beach. Kelp is highly sensitive to environmental changes. Fluctuations in temperature, light availability, nutrients and ...