In Jun 1992 the UN Conference on Environment and Development recognised a distinct group of developing countries which it termed "Small Island Developing States (SIDS). In 1994 the "Barbados Program of Action" was produced to assist such countries in their sustainable development efforts. Currently the UN Department of Economic and Social Affairs lists 52 such states. Some of these are "Territories" or otherwise not full UNESCO members. For current list see https://www.un.org/ohrlls/content/list-sids The 2005 Durban WHC adopted a "World Heritage Program for SIDS which "coordinates and develops World Heritage activities on islands of the Caribbean Sea and the Atlantic, Indian and Pacific Oceans". See http://whc.unesco.org/en/activities/42.