Littering is a careless act indicating lack of respect for the environment, other people, and wildlife. Through education people can learn the consequences of littering and how to stop doing it. This book, designed for elementary children, presents a collection of 16 activities, ideas and resources concerning litter in the aquatic and marine environment. Some of the ideas can be modified for older or younger children. The format for each activity includes: (1) an introductory section that can be read to the class or group; (2) activity objectives; (3) time requirement and materials needed; (4) procedure and extension activities; and (5) a section that poses questions for reflection and discussion to explore opinions, positions, and ethics and environment. A glossary provides definitions of words used in the activities. A resource section that lists agencies and groups where additional information and assistance can be obtained and a materials section that lists supplemental curricula, audio-visual aids and information are provided. (MCO)