This octopus is an ornament from the Action Air series by Aqua Della. These caricatured animals are equipped with a hose so they can be connected to an air pump. This pump increases the oxygen content of the water and produces bubbles, making it appear as if the animals are blowing them out. These themed ornaments are uniformly designed to accurately reflect this atmosphere. This ornament is made of polyester resin. It is completely harmless and does not affect the biological balance of your aquarium. The decoration is suitable for both freshwater and saltwater aquariums. Note: Carefully remove the decoration from the can and rinse it with lukewarm water. Caution: Do not use soap, all-purpose cleaners, or other cleaning agents.