Cephalopoda is a class of mollusks that includes animals like octopuses, squids, and cuttlefish. These creatures are known for their distinct features, such as a large head, a set of arms or tentacles, and a soft body. They are highly intelligent and exhibit complex behaviors, including problem-solving and communication. Cephalopods are primarily marine animals and are found in oceans around the world. They have unique adaptations, such as the ability to change color and texture for camouflage and communication. Many species also possess a beak-like jaw and can expel ink as a defense mechanism against predators.