Intertidal zone marine organism protective structure

The invention discloses an intertidal zone marine organism protective structure. The intertidal zone marine organism protective structure comprises a floating base and a sunk base. The outside of the floating base is provided with floating balls, an upper cavity and a lower cavity which are separated are disposed in the floating base, a reel used for winding ropes is disposed in the upper cavity of the floating base, an plurality of expanding bases which are arranged in parallel in the vertical direction are disposed under the floating base, adjacent expanding bases are connected through ropes, and releasing mechanisms used for controlling the expanding bases to releasing from the floating base one by one are disposed between the floating bases and the expanding bases. A plurality of alga cultivation bricks are disposed on the sunk base, the sunk base is connected with the floating base through ropes, the ropes penetrate through middle portions of all the expanding bases, an inner cavity communicating with the external environment and a plurality of water communicating layers which are arranged under the inner cavity and communicates with the inner cavity are disposed in the sunk base, and expanding frames capable of rotating upwards are disposed in the inner bottoms of the expanding bases. The invention aims to provide an intertidal zone marine organism protective structure being reasonable in structure and various in function, capable of providing food for fish shoal and a good protective effect.