Seaweed

SEAWEED (benthic marine algae) is a large photosynthetic organism typically attached to rocks in the intertidal or shallow subtidal zones to depths of 30–40 m. Approximately 700 species are found on the Pacific coast from Alaska to California, in 3 phyla commonly referred to as green, red and brown seaweeds (see also SEAGRASSES). Seaweeds are the largest types of algae. They contain chlorophyll and other pigments that utilize sunlight to manufacture nutrients by photosynthesis. They are...

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