The proposal is to conduct research on poly culture of oysters in ponds with marine shrimp. Survival of oysters in static water ponds is low, but it is anticipated the survival and growth will be good in ponds where aeration devices cause water to circulate within the pond. Besides the obvious economic benefit to be derived from the sale of oysters, benefits to general pond productivity are anticipated. Conversion of phytoplankton to feces and pseudo feces should have a sparing effect on shrimp feed requirements. Also the oysters and their culture supports will provide growth sites for many organisms consumed by shrimp.