This activity (page 2 of the PDF) is a full inquiry investigation into environmental adaptation. Groups of learners will observe fish at a zoo, aquarium, or fish store and categorize which way the mouth of each identified fish faces. Based on observations made while the fish are fed and additional research, conclusions should be developed about how the fish fits into its environment. This activity can be used to teach learners about the importance of writing good notes while making observations. Relates to linked video, DragonflyTV GPS: California Fish.