Introduce a captivating underwater realm to your aquarium with the Penn-Plax Deco-Replicas Skeleton Escape Aquarium Décor. Designed to resemble an ancient and weathered skeleton escaping from the depths. Crafted from high-quality, non-toxic resin, this decoration is safe for freshwater and saltwater aquariums. For more thrilling effect, you can bury the base in gravel! Simply wipe down and rinse off the aquarium ornament with warm water when you are cleaning out your tank. Never use soap, as the residual soap particles can harm your fish.