Three-dimensional ecological aquaculture net cage for abalone and trepang

The invention relates to a three-dimensional ecological aquaculture net cage for abalone and trepang, belonging to the field of aquiculture devices. The net cage provided by the invention is characterized in that a base is composed of an upper immersed tube, a lower immersed tube and a support tube, wherein the upper immersed tube and the lower immersed tube are round or polygonal, the middle of the upper immersed tube is provided with an upper supporting rack, the middle of the lower immersed tube is provided with a lower supporting rack, and the support tube is vertically or obliquely arranged between the upper immersed tube and the lower immersed tube; the upper face of the base is provided with a net, the bottom of the net is fixedly connected to the upper immersed tube, the middle of the net is provided with a supporting ring, the middle of the supporting ring is provided with the supporting rack, and the supporting ring is provided with a net sheet; the periphery of the net sheet is fixedly connected with the net, the net sheet divides the inner space of the net into an upper layer and a lower layer, the net sheet is provided with a fry accommodating hole, and the upper part of the net is fixedly connected with a floating pipe; and the floating pipe is round or polygonal, the opening of the net is arranged at the middle of the floating pipe, a bracket is arranged between the opening and the floating pipe and used for supporting the net, the opening of the net is fixedly connected with a net sleeve, and the top of the net sleeve is provided with a bait feeding port. The net cage provided by the invention has strong wind and wave resisting capability and can be used for realizing layered culture of abalone and trepang under natural environment.