It's called aquatic hypoxia: http://arstechnica.com/science/news/2008/08/the-growing-problem-of-aquatic-hypoxia.ars http://arstechnica.com/science/news/2008/08/

It's called aquatic hypoxia: http://arstechnica.com/science/news/2008/08/the-growing-problem-of-aquatic-hypoxia.ars http://arstechnica.com/science/news/2008/08/the-growing-prob...