The Tar Slick is a naturally-spawning object exclusive to the Shipwrecked DLC. It can be found anywhere in the Medium Ocean or Deep Ocean. It is a source of Tar, which must be extracted by building a Tar Extractor. A Tar Slick does not run out, and cannot be destroyed, making Tar a renewable resource. A Tar Slick can also be created at the player's will using a Quacken Drill, thus making Tar Slick renewable.