Features 1. Safety Resin Material: Diver aquarium decorations is made of safe and durable resin, Hand coloring, with very flat and smooth edges, and definitely very safe for freshwater and saltwater aquariums. 2. Adjustable Buoyancy: Uses the floating ball to allow divers to dive without sinking to the bottom. The diving position of the diver can be adjusted according to the length of the fishing line and the diver's floating speed can be adjusted by adding different amounts of water to the floating ball. 3. Applicable Method: When using, you need to connect the diver and the transparent float with a thin wire, and then rinse the dust on the surface of the product with clean water before putting it into the water to use. 4. Package Include: 1 nice aquarium decorations for small divers, 1 floating ball, 1 fishing lines. Size: 2.75 x 0.78 x 3.14 inches, floating ball diameter 1.18 inches, fishing lines length: 15.74 inch. 5. Aquarium decoration: Suitable for all types of fish tanks, whether natural wind or placement with interesting animation characters. The diver floats with the water, can help you observe the direction of the water flow of the fish tank. The best decoration for small or large fish tanks. Specification Material: Resin Color: Blue, Brown Size: 7 x 2 x 8 cm, Floating ball: 3 cm, Fishing lines:40 cm Weight: 12 g Package Include: 1× Diver Aquarium Decoration 1× Floating Ball 1× Fishing Line