What happens in a photic part of a body of water?
1 Answer
Nov 26, 2017
The part of a body of water where the light can reach "easily".
Explanation:
The photic zone of an ocean or a lake or a river(!) is the part of its total depth in which the light of the sun can penetrate and be sufficient for organisms who photosynthesise to thrive. It extends from the surface of the water down to a depth where the light intensity falls to 1% of that at the surface. Typical euphotic depths vary from only a few cm in highly eutrophic lakes, to around 200 m in the open ocean (Pacific). About 90 per cent of ocean life lives in the photic zone.
