In marine geology and marine biology
are the organisms and habitats of the sea floor, in freshwater biology
the organisms and habitats of the lakes, rivers and creeks.
From the size of organisms there are distinguished
- macrobenthos, size > 1 mm
- meiobenthos, size > 0.063 mm
- microbenthos, size <0.063 mm
Benthic organisms play a great role as food for fish and men, but also as destruents.