An aquatic jet propulsion device basically includes a portable main control module, a plurality of submersible propulsion units and a sub-two-way communication device. The portable main control module includes a main controller and a main two-way communication device. Each of the submersible propulsion units includes a motor, a battery electrically connected to the motor and a motor controller operatively connected to the motor to control a speed of the motor. The sub-two-way communication device is configured to communicate with the main two-way communication device. The main controller is programmed to individually control the speed of the motors of the submersible propulsion units via the motor controllers.

An aquatic jet propulsion device basically includes a portable main control module, a plurality of submersible propulsion units and a sub-two-way communication device. The portable main control module includes a main controller and a main two-way communication device. Each of the submersible propulsion units includes a motor, a battery electrically connected to the motor and a motor controller operatively connected to the motor to control a speed of the motor. The sub-two-way communication device is configured to communicate with the main two-way communication device. The main controller is programmed to individually control the speed of the motors of the submersible propulsion units via the motor controllers.