The present invention relates to an automatic floating-and-sinking multilayered complex cage-culturing system. The present invention can efficiently and cubically culture abalone or sea cucumbers or both in the open ocean where tidal currents are good and a water quality is good as a case is installed in the water of the sea bottom or a predetermined water layer which is rarely affected by waves in normal days, and the cage is floated on the water surface or sank to an origin place by a simple floating-and-sinking control device in case of necessity such as feeding or maintenance. As several layers of shelters for culturing abalone are stacked on a rectangular frame, and habitat for sea cucumbers is installed under the shelters, the present invention can efficiently and stably culture abalone and sea cucumbers even in the open ocean of which external environmental conditions such as waves and tidal currents are worse than those of the bay. If the structure of the shelters is changed only, the present invention can be utilized as a culturing system for octopuses and hairy crabs. Furthermore, the present invention is composed of abalone shelters, cabinets for stacking the abalone shelters, and a cage frame receiving the cabinets so that the shelters for culturing abalone can be stacked by multiple layers like desk drawers. Therefore, the present invention lifts, manages, and operates only the corresponding cabinet when sorting abalone and replacing the shelters are necessary, thereby reducing manpower and improving the culturing efficiency and productivity.평상시에는 파도의 영향이 거의 없는 해저나 일정 수층의 수중에 가두리가 설치되고 먹이 공급이나 관리 등 필요시에만 간단한 부침 조정 장치로써 가두리가 수면으로 부상되거나 다시 원래의 위치로 침하가 가능하여 조류 소통이 좋고 수질이 깨끗한 외해에서도 전복이나 해삼 또는 전복/해삼을 입체적이고 효율적으로 양식하기 위한 장치로서 사각 프레임 구조물 위에 전복 양식용 셀터가 다층 구조로 적재되며 전복 셀터 밑에 해삼 서식처가 설치됨으로서 파랑, 흐름 등 외력 환경 조건이 내만에 비해 훨씬 거친 외해역에서도 전복과 해삼을 효율적이고 안정적으로 양식할 수 있을 뿐만 아니라, 프레임 위에 설치되는 셀터의 구조만 변경하면 문어, 털게 등의 양식 시설로도 활용이 가능하다 또한, 종래의 부침식 가두리장치와는 달리 전복셀터, 전복셀터를 적재하는 전복 셀터 적재
