A sea electricity energy production device has a submerged water gate for controlling a flow of sea water into the device, one or more paddle wheels that receive water flow through the water gate to drive main gears in rotary motion, a series of pressure tanks having pistons driven by the main gears driven by the paddle wheels to pressurize water flow from the pressure tanks, and a Francis reaction turbine built on land that receives the pressurized water flow from the pressure tanks to drive the turbine and generate electricity.