This hollow submarine comes with a submarine decoration and an air hose connector that can be connected to an air pump. It can add fun and vitality to your aquarium. It has a beautiful shape and can also provide a hiding place for aquatic life. This aquarium decoration only needs to be wiped with warm water and gently brushed with a soft brush to maintain a clean luster, ensuring that your aquarium is always in the best condition and providing a comfortable environment for fish and shrimp. Our underwater aquarium bubblers are suitable for various occasions, including aquarium decoration, model making, terrariums, miniature gardens and more. The imitation submarine aquarium decoration makes your aquarium lively and adds natural colors. It is not only a decoration, but also an ideal habitat for aquatic life. The hollow design allows fish to swim freely above the submarine, providing a perfect entertainment place for small fish and shrimp, increasing the fun and interactivity of the aquarium.