sentence: Few organisms can survive such harsh conditions.
sentences_before: This zone receives spray from wave action during high tides and storms. At other times the rocks experience other extreme conditions, baking in the sun or exposed to cold winds.
sentences_after: Lichens and barnacles live in this region. In this zone, different barnacle species live at very tightly constrained elevations. Tidal conditions precisely determine the exact height of an assemblage relative to sea level.
concept_name: few organism
headings: Rock pool Tide pool zones, from shallow to deep
categories: Biomes Habitats