The SeaQualizer is a device used to reverse the effects of barotrauma. The SeaQualizer is designed to release at three different depth settings (50ft,100ft,150ft). The SeaQualizer allows you to return the fish to a sufficient survival depth without puncturing or injuring the fish. The SeaQualizer is pressure activated avoiding premature release, which can happen with other tools.Through proper use, the SeaQualizer promotes longevity of resources for generations to come.