The Philippines with its over 7,000 islands is primarily a coastal country. Eighty-two percent of the provinces and 65 percent of the
municipalities border the coast. The Philippines is a major fishing country belonging consistently to the top 20 in the world in terms of production. Based on the 1980 census, direct employment was estimated at 1 million fishers and fishfarmers. Given the country's high population growth rate, the generally open-access condition of
fisheries exploitation, and the excess labor supply this number has most likely increased, increasing pressure on water and fishery resources.
Water and fishery resources are vital to the country's economy and culture, hence their proper use is of utmost concern. However,
increasing demands on these resources, primarily from population growth and economic development, endanger the sustainable flow of goods and services they provide. The objective of this paper is to identify the consequences that population growth imposes on these resources in the context of population-development-environment modeling. Specifically, the major issues that should be dealt with by such a modeling effort are raised.