sentence: Marine algae can provide shelter for such organisms as nudibranchs and hermit crabs.
sentences_before: The high tide zone is flooded for hours during each high tide. Organisms must survive wave action, currents, and  exposure to the sun. The high tide zone is inhabited by sea anemones, starfish, chitons, crabs, green algae, and mussels.
concept_name: marine algae
headings: Rock pool Tide pool zones, from shallow to deep High tide zone
categories: Biomes Habitats