Abstract: A child- or infant-sized safety seat is disclosed with relatively horizontal seat and relatively vertical back support elements designed with flotation effecting materials sufficient to keep said child or infant at the water's surface and with critically positioned and apportioned (relative to the weight of the back and seat support elements and the anticipated weight of the child) counter-weight effecting materials to result in that portion of the vertical back support element supporting the child's head and shoulders well above the water's surface. The safety seat is preferably constructed by injecting a semi-rigid, resilient polyurethane foam into a die cast mold into which the weight materials have been pre-positioned to result in the up-righting of the safety seat at the water's surface, and the foam, upon rising and curing, forms around the weighted material to fix its position.