In those ecosystems marine and Lake the area photic is one in which penetrates the light of the Sun. Its depth is very variable depending on the turbidity of the water.Conversely, the aphotic zone is the one that is not possible the development of photosynthesis, since less than 1% of sunlight penetrates it. The aphotic zone is divided into two parts: the bathyal zone between 200 and 2000 meters deep and the huge area with more than 2000 meters of depth.
Photic says of the illuminating surface of the seas and oceans ( phos photos, light Greek ) in which is possible to photosynthesis because it comes the sunlight up to something more than 200 meters. You still the area disfotica in which there are light each time more blurred until a km of depth in which not is possible the photosynthesis. Nor is possible in the area aphotic, without light, in which not is possible the life plant but yes the animal.
