This paper presents a narrow definition of ecotourism which requires a two-way link between ‘ecotourism’ and nature conservation. Examples are given of how ecotourism might be used to support nature conservation directly in Micronesia. Case studies of attempts to establish such a relationship are given for Wotho Atoll (Republic of the Marshall Islands) and for the village of Enipein in the State of Pohnpei (Federated States of Micronesia). Prospects are discussed as well as problems which need to be overcome. A brief account is given of other problems facing Micronesia in the light of dramatic increases in tourism. The paper concludes with some suggested guidelines for the establishment of ecotourism.