At least 70% of the Earth is covered with water. This packet provides background information on eight areas of concern regarding marine and coastal resources. Considered are: (1) "Coastal Resources"; (2) "Mangroves"; (3) "Coral Reefs"; (4) "Ocean Resources"; (5) "Aquaculture"; (6) "Pollution"; (7) "Marine Debris"; and (8) "The Global Commons." Activities included in this packet are designed to increase students' awareness of these issues. Each activity includes a brief description, a concept statement, objectives, a list of relevant subject areas and skills, materials, and procedures. Several maps and worksheets for copying are included in this packet. Individual activity lessons include: "Common Concerns"; "Bringing up Baby"; "Polyp Pile-up"; "Mangrove Trees: Up to their Knees in Salty Seas"; "Sea of Debris"; and "Wave of the Future." A picture for coloring is also included. (CW)