Let me share some interesting facts about the Nautilus, a fascinating marine creature known for its distinctive spiral-shaped shell, often used in jewelry and decor: Habitat: Nautiluses inhabit the deep waters of the Pacific Ocean, ranging from the coast of Japan to the Great Barrier Reef in Australia. Anatomy: They possess a multi-chambered shell, which helps them ascend and descend in water by regulating the gas volume within the chambers. Diet: Their diet primarily consists of crustaceans and small fish, which they capture using their numerous tentacles. Reproduction: Nautiluses are known for their slow growth and reproductive rates, making them vulnerable to overfishing.