Pool Elf underwater cleaning robot design inspired by underwater creatures. The reason why underwater creatures can sail freely under the water is that they have extraordinary balance ability. Take the turtle as an example, its bottom is flat and the upper part is curved, which can effectively reduce the resistance of the water. The overall shape is simple and generous, the lines are smooth and natural, and the resistance can be reduced to the greatest extent when moving in the water, and the cleaning efficiency can be improved.