stephanocystis osmundacea - algae attached by rhizoids to a rock, washed up by a storm, santa catalina island, california

stephanocystis osmundacea alga algae algal flora algology america avalon beach biology brown seaweed bubble california catalina island closeup coast coastline cryptophyta ecosystem forest giant grass kelp macrocystis nature ocean oxidation oxygen in water synthesis photosynthesis plant pyrifera sand santa sea ecology weed seascape seashore selfpurification of shore waves