Aqua Culture Jewel-Box Collection Moving Aquarium Ornament. Give your fish their very own realistic sunken ship with our Aqua Culture Action-Air Aquarium Ornament. Our ornament moves just like a real ship and will be sure to give your underwater friend hours of entertainment. Fish do not like to swim in open water, so this ornament also gives your pet the comforting protection they need. To use, attach an airline to an independent adjustable air source and adjust the air pressure for the best operation. Your fish friend will love our Aqua Culture Action-Air Aquarium Ornament. Instructions: . Attach airline to an independent adjustable air source. Adjust air pressure for best operation.