This booklet contains the third in a series of three interdisciplinary units which focus specifically on the Pacific Ocean and its surrounding countries. The unit, intended primarily for upper secondary students, consists of readings and interdisciplinary activities (science, art, social studies, English, and home economics) presented in four parts. Part 1 looks at the issue of using the sea wisely in broad terms and raises the question of the world's food problem and present and potential ocean resources. Part 2 gives a basic introduction to some concepts of international law as they relate to the law of the sea. A case study on the regulation of whales is included. Part 3 examines the main sources of ocean pollution, focusing in particular on oil spills and chemical effluent from industry. The importance of and damage to shoreline and estuarine systems is addressed, as is the effectiveness of the Kuala Juru Co-operative in Malaysia, where local inhabitants responded to pollution by creating a new aquaculture fishery and administering it through a cooperative. Part 4, which focuses on fishery management, includes a case study on the state of the Southern Bluefin and discussions of ecosystem management, aquaculture, and finding alternatives for fish and fish products. (JN)