Note that the NOAA, NMFS, Hawaii DLNR, Wild Dolphin Foundation, and other conservation groups and scientists discourage swimming with wild dolphins, and advise viewing from no closer than 50 yards. Legislation is under consideration to explicitly ban the swimming tours. Existing federal legislation bans "harassment" of wild dolphins, but doesn't define harassment very clearly.
http://starbulletin.com/2005/04/18/news/index7.html
http://www.nmfs.noaa.gov/pr/MMWatch/...dolphcamp.html