South Carolina has several thousand small coastal islands found in association with its larger Sea Islands. These small islands, ranging in size from less than an acre to several hundred acres, are most numerous between the Santee and Savannah Rivers. Termed marsh hammocks (=hummocks) or back barrier islands, they are typically located behind the oceanfront barrier islands and adjacent to the larger Sea Islands. In 2001 and 2002, conservation organizations conduced biological inventories on several marsh hammocks. Observational information for many plants and animals is included within the discussions of specific islands, habitats, and communities.