Zone Name Upper intertidal zone Zone Features This zone is mainly exposed to air except for at extreme high tides. Tide pools start to appear in the upper intertidal zone (pools of saltwater left behind when the tide goes out; many living organisims can be found in tide pools). Zone Algae. Cyanobacteria.

What are the zones of the intertidal zone?

The intertidal zone can be further divided into three zones: high tide, middle tide, and low tide.

What are the 4 tidal zones?

It has four distinct physical subdivisions based on the amount of exposure each gets — the spray zone, and the high, middle, and lower intertidal zones. Each subzone has a characteristic and distinct biological community.