The Grenadines Island Group is a transboundary proposal by St. Vincent and Grenada. Included are 13 islands belonging to St. Vincent and the Grenadines. They are known for their pre-Columbian history, Garifuna culture and rich marine habitat including coral reefs.
Full screen map of Grenadines Island Group (On tentative list - Saint Vincent and the Grenadines)
I visited the Grenadines in February 2010. Bequia Express and Admiralty Transport run frequent daytime ferries on the hour long trip from Kingstown to Port Elizabeth, Bequia.