The low tide zone - Here organisms remained submerged except at the lowest low tides. The maximum number of species lives here and the maximum biomass. It also has lower diversity than other environments. In this region epifauna live on the sediment . Infauna live in the sediment .
Some organisms are burrowers to avoid drying out.
These include clams, worms, and sand crabs. There are several types of environments in this zone. Salt marshes iii. In mud flats there is not much zonation seen since there is little or no slope iv. Eel grass and turtle grass as well as fiddler crabs are common in this zone.