The goal of the SeeGrip project is the development of an underwater manipulator which is able to perform form- and force-closed object manipulation by using tactile sensor arrays and end-effectors consisting of limb structures. This new kind of manipulator enables the operator to get a feedback about the manipulated objects during assembly tasks in deep sea environments. Especially under diffuse operating conditions caused by swirled-up sediment which constrains the view of the manipulation area, feedback of haptic information supports - or even enables the realization of manipulation tasks.