This document summarizes the results of an experiment estimating the bit error rate (BER) for laser-based underwater communication using on-off keying (OOK) and pulse position modulation (PPM). The experiment varied key parameters like water type, turbulence, ambient light levels, and laser pulse frequency. BER was found to increase with higher salt content water, ambient light levels, and laser frequencies above 10kHz. PPM modulation provided lower BER than OOK. Turbulence from water churning did not significantly impact BER.