Beautiful and engaging aquarium decoration that adds visual appeal and interactive fun to your tank. Key benefits Buoyancy driven diving action: the jellyfish can dive without sinking to the bottom. Its dive depth is adjustable. Durable, safe materials: made from safe silicone, suitable for both freshwater and saltwater aquariums. Colors stay vibrant and are not easy to fade over time. Observes and enhances tank dynamics: the jellyfish movement helps you observe water currents in the tank while adding a natural, presentable character. The design features smooth edges to avoid sharp contacts with tank inhabitants. Attributes and performance Material: safe silicone Compatibility: suitable for freshwater and saltwater tanks Movement: buoyancy allows gentle diving without sinking Adjustability: dive depth can be adjusted Edges: designed with no sharp edges to protect fish and decor What's included Jellyfish ornament Fishing line for depth adjustment Suggested use scenarios Home aquarium display: place in a freshwater or saltwater tank to create a dynamic, lifelike centerpiece that enhances visual appeal and provides interactive movement. Educational demonstrations: use in classroom or hobbyist demonstrations to illustrate buoyancy and water current concepts. Adjust dive depth to show different vertical positions in the tank. Tank flow observation: position near the water outlet or filter area to observe how currents move around the jellyfish, helping you assess circulation patterns in your setup. This jellyfish ornament stays consistent with its original purpose and features, offering a clear, reliable solution for adding beauty, movement, and practical observation to your fish tank.