Devices that use an acoustic trigger for releasing a buoy attached to submerged pots that would then float to the surface for gear retrieval. This would eliminate vertical (and potentially entangling) lines in the water column (DeAlteris 1999).
Devices that use an acoustic trigger for releasing a buoy attached to submerged pots that would then float to the surface for gear retrieval. This would eliminate vertical (and potentially entangling) lines in the water column (DeAlteris 1999).