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).
For other people of the same name, see John Muir (disambiguation). John Muir (/mjÊÉr/; April 21, 1838 â December 24, 1914) also known as John of the Mountains, was an American naturalist, author, environmental philosopher, glaciologist and early advocate for the preservation of wilderness in the United States.