Octopus vulgaris, commonly known as the common octopus, is a marine cephalopod found in warm and temperate waters around the world. It has a soft, bulbous body and eight long arms lined with suckers, which it uses for movement and capturing prey. This species is known for its intelligence and ability to solve problems. The common octopus primarily feeds on crustaceans, fish, and other small marine animals. It can change color and texture to blend into its surroundings, providing effective camouflage against predators. Octopus vulgaris is also known for its ability to squirt ink as a defense mechanism when threatened.