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Cuttlefish are marine animals known for their unique appearance and behavior. They belong to the class Cephalopoda, which also includes squids, octopuses, and nautiluses. Cuttlefish have an internal shell called a cuttlebone, which helps them maintain buoyancy in the water. They are masters of camouflage, able to change the color and pattern of their skin quickly to blend in with their surroundings. Cuttlefish are also known for their complex mating rituals, during which males display vibrant colors and patterns to attract females. While cuttlefish are found throughout the world's oceans, they tend to prefer shallow coastal waters, although some species can be found in deeper waters. They are carnivorous animals, feeding on small fish, crustaceans, and mollusks. Cuttlefish have a relatively short lifespan of 1-2 years, but during that time, they play an important role in the marine ecosystem as both predators and prey.