Cuttlefish is a type of marine fish that belongs to the family Sepiidae. They are known for their unique ability to change color and texture, allowing them to blend in with their surroundings or communicate with other members of their species. Cuttlefish have eight arms and two tentacles, which they use to capture prey such as small fish, crustaceans, and mollusks. They are found in the waters around Australia, Europe, Asia, and North America.