Distribution of Organisms: How are they distributed throughout an environmental setting?
i. Random: rare in marine environment
ii. Uniform: more common than random. Examples: eels in holes or penguins on nests
iii. Clustered: most common schooling fish. Examples clusters of barnacles and mussels on rocks.
iv. Zoned: species or community of species living together in a limited geographic range defined by physical and biological factors. Examples: oyster reef along an estuary with a limiting range in salinity.
Most organisms in marine environment are ZONED or CLUSTERED.