【Safe】- No sharp edges, your fish will swim with it without worrying about scratches. The cute little diver is a good playmate with your fishes. 【Material】 - The cute little diver aquarium decoration is made of safe and durable resin. It does not produce any harmful substances and does not damage the environment of the aquarium, not easy to fade. Suitable for both freshwater and saltwater. 【Adjustable position】 - The diver’s diving position can be adjusted according to the length of the fishing line. The floating ball can be opened. If you feel that the diver is swimming too fast, you can add water accordingly. 【Aquarium Decoration】 - Suitable for all kinds of aquarium scenery, whether natural wind or collocation with interesting animation characters. The diver swims with the water, it can help you observe the aquarium water flow direction. Best decorations for small or large aquarium.