Stock Photo - Giant kelp or giant bladder kelp (Macrocystis pyrifera) is the largest of all algae, more than 45 m. Heterokontophyta. Phaeophyceae. Laminariaceae. California coastline, USA. Eastern Pacific Ocean.

Stock Photo: Giant kelp or giant bladder kelp (Macrocystis pyrifera) is the largest of all algae, more than 45 m. Heterokontophyta. Phaeophyceae. Laminariaceae.

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