Apalachicola River and BayOyster Reef Ecology | On the Reef Predatory Snails Overrunning Florida Oyster Reefs by David March 6, 2013 by David March 6, 2013 Dr. David Kimbro is starting to see a pattern across Florida oyster reefs affected by loss of freshwater input. Is the prevalence of oyster eating snails the cause or merely a symptom of oyster reef decline?