Summary: The establishment of marine reserves is successful in protecting fish and other marine life from overfishing, but now research from the University of Exeter shows the benefit is even greater than that. The reserves could also help coral reefs to survive... because algae and seaweed, which are usually detrimental to coral, are controlled by grazing parrotfish. Kind of a reversal of roles in the marine world -- coral reefs, which have supported thousands of fish and other marine species for millions of years, are now getting a helping "hand" from fish.
