The BLACK-AND-WHITE DIVER is a type of bird known as an AUK, which is a seabird that is characterized by its black and white plumage. It is a member of the Alcidae family and is found in the Northern Hemisphere. The BLACK-AND-WHITE DIVER is a medium-sized bird that feeds on fish, crustaceans, and mollusks. It is a strong swimmer and can dive up to depths of 30 meters. It nests in colonies on cliffs and rocky shores.