Bio-waves is developeing, low-cost, autonomous acoustic recording systems. The first such system was developed with a small R&D grant from NOAA. This effort resulted in the micro- Marine Autonomous Recorder system (microMARS). This system is now being phased out and replaced by the newer SonarPoint system, which was developed with funding from the Office of Naval Research. We are continuing to field test and improve this system which is now available commercially from our collaborators Desert Star Systems LLC.