Penn Plax Aerating Action Ornament, Diver with Hose &ndash; Color May Vary &ndash; Small AIR DRIVEN ORNAMENTS BRING ANIMATION TO YOUR TANK: the real motion air driven ornaments movements provide fun and entertaining action while aerating your tank. DIVERS HELMET PROVIDES A STEADY STREAM OF BUBBLES: the divers helmet allows your diver to breathe, and the escaping bubbles provide movement in your tank. PROVIDES MUCH NEEDED AERATION FOR YOUR TANK: bubbles escape from the helmet of your diver to provide your tank with much needed air. Requires air pump and standard 3/16 tubing (not included). MADE OF FISH SAFE AND DURABLE MATERIAL: the Penn Plax Aerating Diver with Hose is made from a durable plastic resin that is safe for your freshwater and saltwater / marine tank. SHOP PENN PLAX FOR ALL YOUR PETS NEEDS: continue to customize your aquarium with Penn Plax Action Ornaments and other decorations and dcor.