referring to organisms living in the region between the surface and 200 m depth 
The top layer of the ocean from the surface down to about 200 metres. This is the illuminated zone where there is enough light for photosynthesis. Nearly all primary production in the ocean occurs here. See photic zone.
waters from the surface to depths generally not exceeding around 650 feet (200 m).
(Gk: epi=above; pelagos=ocean) living very close to the surface in the open ocean, to about 100m. eco04.gif.
The top layer of the ocean from the surface down to about 200 metres. This is the illuminated zone where there is enough light for photosynthesis. Nearly all primary production in the ocean occurs here. See photic zone.
referring to organisms living in the region between the surface and 200 m depth
epipelagic 1. Relating to or living in the upper zone of the ocean, from the surface to a depth of about 200 meters (656 feet). 2. Of or relating to the part of the oceanic zone, or stratum. into which enough sunlight enters for photosynthesis to take place.
of or pertaining to the stratum of the oceanic zone where enough light is present for photosynthesis to occur.