Real motion air-driven ornaments provide entertaining action while aerating your fish tank. The pirate skeleton moves and steers the remains of his sunken ship. Made of durable plastic and resin that is safe for your aquarium. This aerating aquarium ornament gives you an Intuitive feeling of a sunken pirate. 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 rises to provide your tank with much-needed air. Use your pressure control valve (not included) to adjust the motion and the volume of air. Fun to watch and entertaining for your fish.