In the depths of the Aestarian sea on the enchanting world of Crius, resides a fascinating creature known as the Croobring. Measuring a mere foot in diameter, this arthropod boasts a distinctive flattened disc-like body, eight small stubby legs, and a tail used as a rudder to maneuver through the water. With a mouth situated beneath its body and large, expressive eyes, the Croobring relies on bioluminescent coral spires to illuminate its surroundings and navigate the dark depths. Intriguingly, the Croobring's transparent stomach hosts a unique bacteria that produces a mesmerizing light display in varying colors, which it uses to communicate with others of its kind or to attract a mate. Its flat shape allows it to snugly tuck itself into crevices and the small spaces within the enormous coral structures that the Escarians call home. These peaceful creatures are renowned for their impressive ability to consume almost anything, including the minuscule particles of "sea snow." As a result, the citizens of the underwater city of Escaria are particularly fond of the Croobring, keeping them as cherished pets to maintain their dwellings' cleanliness. Furthermore, the Croobring's symbiotic relationships with larger creatures assist in warding off underwater parasites, adding to their allure and usefulness. For those who have the privilege of encountering these wondrous beings, the Croobring is a sight to behold.