Lagoons are shallow bodies of water that gets separated from larger water bodies due to the formation of reefs or barrier islands. Atoll lagoons form as coral reefs grow upwards while the islands that the reefs surround subside, until eventually only the reefs remain above sea level.
From Wikipedia, the free encyclopedia. John Knoll (born October 6, 1962) is an American visual effects supervisor and chief creative officer (CCO) at Industrial Light & Magic (ILM).
Greatly impressed by visits to ILM's newly founded computer graphics department, Knoll took up computer graphics as a hobby. Teaming with his brother who was working on his doctoral thesis in computer vision at the University of Michigan, the two created Photoshop in 1987.