This manual provides curriculum materials for implementing a career exploration class in marine science occupations within a Practical Arts Education program for middle/junior high school students. Introductory materials include the program master sequence, a list of marine science occupations, and an overview of the competency-based instructional system for practical arts. The instructor's guide to learning activities contains guide sheets for each task assignment sheet, which present objectives, attitudes and values to be developed, checkout activities, recommended references and audiovisuals, notes and suggestions for instruction, and references and necessary tools and equipment. Master copies of learning activities are included. Appendixes include a vocabulary listing, a list of practical arts videotapes, a list of references appropriate for career exploration, and ideas for addressing students with special needs. The four student task assignment sheets are also included. Each contains the following components: an introduction, objectives, learning activities, checkout activities, vocabulary, instruction sheets, and a copy of the instructor's final checklist. The tasks provided include the following: reading an oceanography chart, identifying ocean basin features, identifying external features of a bony fish, and investigating fish behavior. (YLB)