A combined marine entertainment system and depth sounder (10) that more efficiently utilizes limited marine instrument panel space, that is more convenient and simple to operate, and that shares certain components and, therefore, is less expensive to manufacture and install. The apparatus includes a main unit (12) and a separate remote unit (14). The main unit includes a housing (16); an entertainment assembly including a display (20) and an entertainment component (18) positioned in the housing; and a depth sounder assembly including a depth display (48) positioned within the same housing as the entertainment assembly display and entertainment component.