A hyper redundant robot comprising: a first disk; a second disk positioned adjacent to the first disk, the first disk and the second disk having a longitudinal axis; a first joint arrangement positioned between the first disk and the second disk, the first disk and/or the second disk being in sliding contact with the first joint arrangement to enable the first disk and the second disk to rotate relative to one another; and a second joint arrangement positioned between the first disk and the second disk, the second joint arrangement being less stiff than the first joint arrangement.