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Safeguarding the Health of the Oceans (Worldwatch).
Uploaded on Saturday 25 Feb 2012
Harmful algal blooms in the West Central Atlantic, 1970-96
Philippe Rekacewicz, UNEP/GRID-Arendal
The graphic shows the trend of the number of harmful algal blooms in the Western Atlantic from 1970 to 1996. The excess growth of algae is often caused by pollution, and can have negative or fatal effects on some species of fish.