over and under the surface of the water the supporter 200 may be installed on the lake the river the sea or the like specifically the supporter 200 may be fixed into the soil or the like under the water alternatively another supporter may be fixed into the ground or the ship and connected to the supporter 200 hereinafter the supporter 200 will be described in detail the water ice maker 100 includes an upper cooling fan 110 a bimetal 120 and a lower cooling fan 130 the upper cooling fan 110 includes a recessed portion for accommodating therein some water to be frozen the bimetal 120 is disposed between the upper and the lower cooling fan 110 and 130 and transforms for itself depending on the temperature difference between the water and the atmosphere such transformation helps to fall down the ice produced in the cooling fans 110 and 130 into the surface of the water in other words the bimetal 120 responsively transforms for itself depending on the temperature difference between the water and the atmosphere to thereby transform the inner shapes of the cooling fans 110 and 130 this causes the ice produced in the cooling fans 110 and 130 to be easily fallen into the surface of the water like the upper cooling fan 110 the lower cooling fan 130 also includes a recessed portion for accommodating therein some water to be frozen each of the cooling fans 110 and 130 serves.