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. Detritus feeding , where plant material is degraded by bacteria and fungi. An example of a detritus feeder is shrimp. Deposit feeding , where organisms engulf sediment and process it in their guts to extract organic matter.