The discovery of several Crepidula fornicata reefs in Buzzards Bay, Massachusetts presents an opportunity for the Coastal America Foundation to collaborate with the Massachusetts Maritime Academy. Data presented here are building blocks of mapping the reefs, understanding the ecological role of the reefs and identification of the benthic community dominants. In 1955 benthic sampling of certain areas of the Bay did not identify any Crepidula fornicata present. Now they are in numbers of 1,000 to 1,500 individauls per square meter. This ecological evaluation will be documented here.