Decorative Octopus ornament with a water pump activated blinking eye for fish tanks and aquariums. Requires an aquarium air pump to rotate the eye. M-13 Dimensions: Length: 8 inches Width: 4 inches (at widest point) Height: 3.5 inches (at tallest point) Return Policy Returns are accepted, however the return shipping cost will only be covered if there was a mistake on my part or if there is a problem with the item. If you have any problems with your order, please contact me before submitting any feedback, I will do my best to help resolve your issue.