Product Details Crayfish are members of the phylum Arthropoda (commonly called arthropods) and the class Crustacea. Because of their very specialized appendages, crayfish are the perfect specimens to convey to students the relationship between structure, function, and the environment. Crayfish dissection can be done with scissors, making them perfect for an introductory dissection experience. During this engaging, hands-on activity, students learn about: * Basic crustacean anatomy * Open circulatory systems * How form fits function Product Features * No color injection - great for general anatomical studies * Immersed in Carolinas Perfect Solution holding fluid, packaged in 1- to 5-gal pails, and sealed with leak-proof, reusable lids; ideal for long-term storage * Prices listed are for 10 specimens Carolinas Perfect Solution Carolinas Perfect Solution is a proprietary fixative that produces the safest and highest quality specimens on the market. Carolinas Perfect Solution specimens are safe and non-toxic, produce no dangerous off-gassing, and require no special disposal. The life-like color and tissue texture allow students to easily identify structures and learn anatomy.