Easy to Clean: Smooth surfaces requires minimal maintenance—just rinse with warm water to keep the aquarium clean and hygienic Breathable Design: Multiple holes enhances water flows and oxygen circulations, maintaining a water environment for all tanks inhabitant Floating Feature: Light weight Polylactic Acid construction allows it to float on water surfaces without sinking, offering fish play spaces at any depth in the aquarium Consist of Polylactic Acid, ensuring without harm to water and keeping fish and shrimp in freshwater or saltwater tanks Safe Hideouts: Unique tunnel design provides an ideal shelter for fish to hide from predators or rest when stressed, creating a secure and comfortable environment