Discover the beauty of a self-sustaining world with the EcoSphere Small Sphere. This no-maintenance aquarium features a completely enclosed ecosystem, containing marine shrimp, algae, and micro-organisms. Utilizing NASA technology, the EcoSphere requires only indirect light to thrive. A perfect blend of science and art, it makes a unique gift and fascinating addition to any home or office. Experience the balance of nature with this miniature aquatic world that needs no feeding or water changes.