Wonderland of water ecology: 1,265 views of: Biological filters are an important part of the biosphere. Paper and video, very interesting! This paper reviews the multi-year research of aquatic organisms: the organisms which are filter-feeders.

1,265 views of:  Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2, p. 30-36. 
Paper and video.
http://5bio5.blogspot.ru/2014/04/1265-views-of-biological-filters-are.html

This paper reviews the multi-year research of aquatic organisms: the organisms which are filter-feeders. The research was done by Dr. Sergei A. Ostroumov (Moscow State University) in U.K., Russia, Ukraine, Moldova. New facts on the substancial role of the filter-feeders in improving water quality. New aspects of environmental hazards from chemical pollution, especially by surfactants and detergents.

Full text online free, see:

http://5bio5.blogspot.ru/2014/04/biological-filters-are-important-part.html

https://www.researchgate.net/publication/261554265_

http://ru.scribd.com/doc/84318765/   [1,265 views online, by April 14, 2014]

Video: 
water filtration by bivalve mollusks:
http://www.youtube.com/watch?v=9SK5amoShPE