Euphotic: adj. Of, relating to, or being the uppermost layer of a body of water that receives sufficient light for photosynthesis and the growth of green plants. see photic: 1. of or pertaining to light 2. pertaining to the generation of light by organisms, or their excitation by means of light. 3. well-lit
There's even an Euphotic Foundation: The Euphotic Foundation is dedicated to all those beings who wander the earth bringing us Good Light and in some small way to making a contribution for the betterment of the World we live in.