aphotic zone


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aphotic zone

the zone of an ocean or sea into which light does not penetrate and in which, therefore, photosynthesis cannot take place. It is usually below about 100 m. See also SEA ZONATION.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Group Lo dominated in the euphotic zone (64.7 % of the total biomass) and X2 dominated in the aphotic zone (84.2 % of the total biomass) at collection point PC.
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Aphotic zone carbonate production on a Miocene ramp Central Apennines, Italy.
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Luv U Mate also talked about the aphotic zone, the point where sunlight loses its power of transference through the water as summarized by Cameron.
Hollywood director Cameron endorses 'Luv U Mate' author's views on Mariana Trench
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