Giant kelp is the most common type of kelp found along the Pacific Coast, forming vast underwater forests.

Giant kelp (Macrocystis pyrifera) is the dominant species of kelp along the Pacific Coast, thriving in the nutrient-rich waters of the California Current. It can grow up to 2 feet per day, forming dense kelp forests that provide habitat for diverse marine life. These underwater forests play a vital role in marine ecosystems, offering shelter and food for a variety of sea creatures. While bull kelp is also common, giant kelp is the largest and most widespread species.