<P> Diatoms are a widespread group and can be found in the oceans , in fresh water , in soils , and on damp surfaces . They are one of the dominant components of phytoplankton in nutrient - rich coastal waters and during oceanic spring blooms , since they can divide more rapidly than other groups of phytoplankton . Most live pelagically in open water , although some live as surface films at the water - sediment interface ( benthic ) , or even under damp atmospheric conditions . They are especially important in oceans , where they contribute an estimated 45 % of the total oceanic primary production of organic material . Spatial distribution of marine phytoplankton species is restricted both horizontally and vertically . </P>
<P> Diatoms are a widespread group and can be found in the oceans , in fresh water , in soils , and on damp surfaces . They are one of the dominant components of phytoplankton in nutrient - rich coastal waters and during oceanic spring blooms , since they can divide more rapidly than other groups of phytoplankton . Most live pelagically in open water , although some live as surface films at the water - sediment interface ( benthic ) , or even under damp atmospheric conditions . They are especially important in oceans , where they contribute an estimated 45 % of the total oceanic primary production of organic material . Spatial distribution of marine phytoplankton species is restricted both horizontally and vertically . </P>
sediments produced by plants and animals in the sea called
sediments produced by plants and animals in the sea called
Diatoms
Diatoms