The SeaQualizer descending device is an innovative release tool designed to help fish recover from the effects of barotrauma. Barotrauma is the result of bringing a fish up from depth too quickly while fishing. Doing this prevents the fish from releasing air from its air bladder quick enough as pressure on it is decreased as it reaches the surface. This causes the air bladder to expand beyond its normal size.Physical effects of barotrauma can include:Floating at the surfaceStomachs protruding out of the fishs mouthBulging eyesFlared gillsInflated body cavitiesTo use the SeaQualizer pressure activated release tool first, attach the device to a fishing rod or retrieval line. Next, youll attach your fish and lower it back down into the water. The device will release the barotrauma stricken fish at a predetermined depth set on your SeaQualizer.Each Saltwater model has three depth settings to choose from:50-100-150 ft for the Standard Release100-200-300 ft for the Deep ReleaseBy bringing the fish back down to depth, naturally occurring pressure will re-compress the enlarged swim bladder causing the fish to become neutrally buoyant allowing it to swim on their own. This also eliminates all of the other physical effects of barotrauma that were seen at the surface.