Penn Plax® Action Air® Aquarium Ornaments bring animation and charm to your underwater world while aerating your tank. This Action Air® Pirate Skeleton-at-the-Wheel Live-Action Aerating Aquarium Ornament gives your aquarium that sunken pirate look & feel. Each ornament is created in great detail and weighted to help them stay put. Simply connect the ornament to a standard 3/16" airline from your air pump (not included) and watch as the pirate skeleton continues to steer the remains of his sunken vessel, while a steady stream of bubbles rise providing your tank with much needed air. Use your pressure control valve (not included) to adjust the motion and the volume of air. Each ornament is made from a durable plastic resin that is safe for your aquarium. Fun to watch and entertaining for your fish, Action Air® ornaments fit in almost any tank and come in a variety of styles & sizes so you can continue to add to your aquarium design. Pirate Skeleton-at-the-Wheel measures approximately 3-1/2"x 2-1/2"x 5" tall.