Index >> Microbial Ecology of Different Ecosystems>> Marine Ecosystem

Also the distribution, concentration, seasonal changes and the movement of seawater and the nature of ocean floors have a major role in the distribution of marine living forms. The water surrounds all the marine organisms and the bodies and internal system of coelenterates, echinoderms, tunicates, etc. Due to the relatively stable nature of physical properties and due to the presence of dissolved salts in seawater, the marine organisms lack specialised regulatory systems or integuments. In this way the organisms themselves are a part of the dynamic environment.