It’s just a simple skull, a bit old. Artificial resin. harmless. This product has no effect on fish and water. Provides a more natural environment for fish, shelter and recreation. Don’t worry if your baby plays with the shrimp. Just rinse with water before use, no brush needed. Size: 111410cm Packing List: 1 * Aquarium Decorative Skull We only sell Aquarium Decorative Skulls, not other items in the pictures. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Due to manual measurement, please allow slight errors in size.