The Uniclife 6 Pcs Glowing Jellyfish Ornament Decoration for Aquarium Fish Tank is a realistic and charming way to add some style to your fish tank. These jellyfish ornaments are made of dependable silicone material that is easy to clean and maintain. With a beautiful blue or purple glow, they provide a great way to add some life to your tank. The ornaments are easy to use, just pull them out of the package and put them in your tank.