The design of the buoy-aerostat linking system. This is to supply helium to the aerostat, power the camera, and send real-time video to shore-based computers:

Aerostats could be deployed between 100-200m asl depending on compromises between field of view vs resolution. The constant helium top-up supply could allow aerostats to remain airborne for several days to weeks. Additional energy could be supplied by a wind turbine on the buoy or attached to the tether. Buoys would be anchored to the ocean floor. There may be confounds in using the camera in high winds - even with gyro stabilisation.