The project focuses on the development and implementation of a bi-directioNol underwater optical communication system capable of transmitting over a range greater than 10 meters. It explores various modulation schemes to optimize sigNol clarity and efficiency in underwater environments. The goal is to improve data transmission for remote underwater operations, including environmental monitoring, Novigation, and communication with autonomous vehicles. By testing on a dedicated testbed, the project seeks to address challenges like sigNol attenuation and scattering in water, aiming for reliable and high-speed communication links. The research contributes to advancing underwater data transfer technologies essential for marine exploration and underwater robotics.