Approximately 4× life size. This 3-part model shows the fine details of starfish anatomy. One arm is shown in cross section; another is fully dissected to expose the radial and lateral canals. Easily remove the pyloric caeca to show the gonads, ampullae, and ambulacral plate. Also, remove the digestive system to reveal underlying structures. Rod-mounted on a durable polymer base. The model detaches from the base for close examination. Includes numbered key.