A molluscan bivalve cage system includes a cage formed of a mesh material of sufficient porosity to allow entry of molluscan bivalves. A fixed buoyant mechanism is secured to an upper surface of the cage and an anchor counterweight mechanism maintains the bivalve cage in a relatively stable position within a marine environment. An adjustable stirrup mechanism adjusts the height of the bivalve cage above the bed of a marine environment during various stages of growth of the molluscan bivalves.
