The Crayfish Anatomy Model is an anatomy activity set from American Educational Products and manufactured in the United States. This anatomy set features the crayfish in 3-D so learners can study the organs and structure of an animal with an exoskeleton. The colorful model illustrates the special adaptations the crayfish has for life underwater with an inset of the gill structure. The activity set also includes an activity notebook with a glossary, key, black line master, and color transparency. This activity set is best used for student education. The Crayfish Anatomy Model is 24.0 x 17.7 in and weighs approximately 5 lbs.