The Common Cuttlefish (Sepia officinalis) is the largest and most known species of all cuttlefish. They are chunky with large eyes and beak like jaws. The Common Cuttlefish varies in color, but is typically black-brown, mottled, or striped. Common Cuttlefishes can quickly change their color and texture to match their surroundings. The Common Cuttlefish is native to the Mediterranean Sea, North Sea, and Baltic Sea. During the day they spend their time buried below substrate and are active at night. The Common Cuttlefish preys on crustaceans, small fish, and mollusks. The Common Cuttlefish is not in danger of extinction.