Boaters who received the educational intervention were less likely to agree that speed limits were adequately signed than did the treatment group. Manatee Watch literature describes the different speed limit signs, depicted on its chart. Possibly, recipients of the educational program were more aware that speed limits are not adequately signed because of the chart. The behavior items in the survey were designed based on the behaviors targeted by Manatee Watch, yet the treatment and control groups did not differ on any of the scaled behavior items. Although recipients of the education program received nautical charts, these boaters did not report carrying nautical charts while boating more frequently than other boaters. The other items, regarding boating speed and awareness of manatees in shallow water, were primary messages conveyed by Manatee Watch on their materials. Answers to the open-ended behavior questions about what to do if you run aground or what to do if you see a sick or injured manatee did not differ between treatment and control groups. Based on these findings, it appears that the Tampa Bay Manatee Watch did not have a significant effect on the boaters' attitudes, knowledge, or behavior regarding manatees. One question on the survey: "Has anyone from Tampa Bay Manatee Watch ever given you any materials while you were boating in Tampa Bay?" attempted to assess if people remembered the educational intervention from Tampa Bay Manatee Watch. Only 55% percent of those in the treatment group reported receiving the educational intervention. We could not distinguish whether this was due to people's faulty memory or if the methods used in the study did not adequately identify the treatment boaters. The study began in June of 1999; it is possible that people did not remember receiving this