Designed to help teachers develop students' awareness and understanding of some of Hawaii's endangered aquatic resources, this module contains activities and instructional suggestions for use with intermediate as well as high school students. The module is divided into two sections which explore the streams and estuaries of Kauai. Activities in each section contain a learning objective, material list, procedures, and in most cases discussion questions. Many of the activities provide opportunities for students and teachers to interact directly with the environment. Although the module deals with specific sites on Kauai, the information and activities presented are applicable to comparable sites on any of the other islands. Appendices contain several instructional directives among which are: (1) identification guide to exotic stream fuana; (2) identification and biology of native stream animals; (3) plankton net construction; (4) identification guide to life in Hawaiian estuaries; (5) tables for conversion of specific gravity to salinity and (6) suggested additional activities for estuary field trips. (ML)