been subsumed into land reclamation for Logan International Airport. The Harbor Islands have made up Boston's least populated electoral area, Ward 1, Precinct 15, since 1990, though the polling place is on the mainland at Columbia Point. Since 1920, Boston must pass legislation to redistrict. As of 2018, there were two active voters, staff at the Thompson Island Outward Bound Educational Center. There were previously registered voters at a recovery center and a homeless shelter on Long Island, but few voted and they have closed. Aquaculture In 1996, the Boston Globe reported that Mayor Thomas Menino and MIT engineer Clifford Goudey were planning a program to use the great tanks on Moon Island as a fish farm or a temporary home for tuna or lobster in an attempt to implement a recirculating aquaculture system in Boston Harbor. The prices of both these fish types vary by season. The plan was to collect and store fish in the tanks and sell the fish at higher prices when they were out of season. Nothing has come of this plan to date. Lights and other aids to navigation Boston Light Deer Island Light Egg Rock Light Long Island Head Light Lovells Island Range Lights Nixes Mate Spectacle Island Range Lights The Graves Light Images See also Boston Harbor Islands National Recreation Area Massachusetts Port Authority Boston Harborwalk References External links Save the Harbor / Save the Bay The Boston Harbor Association NOAA Soundings Map of Boston Harbor Flickr.com, Photos, January 2009. Flickr.com, Photos, November 2009. Flickr.com, Photos, February 2010. Dutton, E.P. Chart of Boston Harbor and Massachusetts Bay with Map of Adjacent Country. Published 1867. A good map of a proposed build-out of infrastructure into the Boston Harbor. Judge A. David Mazzone chambers papers on the Boston Harbor Cleanup Case, 1985–2005, University Archives and Special Collections, Joseph P. Healey Library, University of Massachusetts Boston Geography of Boston Boston Estuaries of Massachusetts Bodies of water of Norfolk County, Massachusetts Bodies of water of Plymouth County, Massachusetts Bodies of water of Suffolk County, Massachusetts