In September 1993 the National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce, proposed adding the seagrass Halophila johnsonii (Johnson’s seagrass) to the United States List of Endangered and Threatened Plants (58 FR. 48326). As a follow-up, in August 1994 NMFS proposed designation of critical habitat for Johnson’s seagrass (59 FR. 39716). Since the original proposal to list H.