This is very interesting! Not only because of the power implications, but because they are using a wireless signal to broadcast underwater!
Sending data with sound
Once image data are captured, they are encoded as bits (1s and 0s) and sent to a receiver one bit at a time using a process called underwater backscatter. The receiver transmits sound waves through the water to the camera, which acts as a mirror to reflect those waves. The camera either reflects a wave back to the receiver or changes its mirror to an absorber so that it does not reflect back.
Think this could be adapted to make a short range wireless transmitter for Sea Perch?
