ocr: Tuvalu's resouce potential lies solely in the waters of its 3.2 million square miles exclusive economic qone (EEZ.) Its rich fish stocks are being exploited mainly by foreign boats in return for licensing fees. However, Japan has donated fishing boats to Tuvalu and deep- water fishing is being developed. Hopes of valuable mineral reserves have been raised by the discovery of an undersea mountain in the EEL.Solar energy is being developedto cut the use - ofpetrol for power generation. Fuel accounts for about 14% ofimport costs.