The U.S. Fish and Wildlife Service initiated this study in 2002 and produced a report on the distribution of eelgrass beds in the eastern portion of Long Island Sound: Eelgrass Survey for Eastern Long Island Sound, Connecticut and New York (Tiner, et al. 2003). This survey was intended to be the baseline study for monitoring the status of eelgrass in this area of Long Island Sound. In 2004, the U.S. Environmental Protection Agency provided funding to update this survey in 2005. This report outlines the methods used in the survey, summarizes inventory results, compares the findings with the 2002 survey, and provides detailed maps showing the location of eelgrass (Zostera marina) beds detected during the 2006 survey.