Anchor devices for maintaining the position of marine vessels, fishing rods, umbrellas, and other items are disclosed. In an aspect, an anchor device configured for use in or near a littoral zone is disclosed comprising an auger and a body. The auger is a conical, helical screw blade constructed of a composite material or other rigid substance chosen to limit damage to individuals and equipment. The body is configured to connect to a marine vessel, thereby providing a shallow water anchor for the vessel. In another aspect, the body is configured to connect to and anchor fishing poles, signs, umbrellas, and the like.
