Oysters are important as more than just food. Oysters build an ecosystem that efficiently filters water and houses small invertebrates, which in turn are eaten by commercially important fish and crab species. Dr. David Kimbro and Dr. Randall Hughes are interested in fear on the oyster reef. When oysters sense predators and stop filtering water, how does that affect water cleanliness and oyster growth?  Oysters also need fresh water and nutrients to survive. When the flow of Apalachicola River was reduced, Florida’s largest oyster fishery crashed and Dr. Kimbro investigated.