This was a really neat scientific mystery. The Elkhorn Slough was far healthier than scientists thought it should be. It is close to nearby farms and orchards and the runoff from fertilizers should have made the algae grow and destroy the sea grass but the opposite was happening; the seagrass was flourishing. Through careful observation, study, and some luck, Brent Hughes was able to discover how the sea otter population was helping to ward off the algae.
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