- Name: giant perennial kelp
- Caption: Giant Perennial Kelp : Macracystis Blade length 10" to 15".Plants up to 200' or longer. This is our largest kelp; it can grow more than 18* a day. Vast forests grow off the coast of southern California. Algin is extracted from the kelp, then used in food products, drugs, and the processing of textiles, beer, paints, ice cream, and paper products.
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