Both cliffs and rocks
Because movements of water wash away the finest particles, they can only be found in the most wave protected areas. Cliffs on the other hand, can be found in both wave protected and exposed areas. Wave effect is greatest at the surface, even if there are cliffs higher up the beach, there are usually rocks and finer particles further down.
Quite often you can find identical organisms on rocky and peeble beaches as you would amongst cliffs, but these beaches usually have a richer fauna, because of the nooks and crannies amongst the rocks create countless micro-environments. All the cavities give protection and conditions vary greatly. Furthermore, rocks and peebles can be held together in place by sand, remains of algae and floatsom.
|Cliffs and rocks are fantastic!|
|Zoning and flecked occurrence|
|Animals that are attached|
|Variation and change|
|Variations in water level|
|Both cliffs and rocks|
|Freshwater and saltwater|
|Geography, climate and history|
|Organisms life cycles|
|Organisms effect on each other|
|Energy and the flow of material|