Could this be the start of underwater transmissions, texts, sound and music? Maybe radio location for missing divers? Or do you think that the the underwater world has no place for man made signalling? What effect, if any, would it have on marine life?
"It's easy to take modern wireless communication
for granted above ground, but it's useless in areas where the signals
can't propagate, like underwater or in caves. DARPA might have a better
way: its AMEBA (A Mechanically Based Antenna) team is developing
portable ultra-low-frequency (1Hz to 3kHz) and very low frequency (3kHz
to 30kHz) transmitters that could penetrate materials like water and
stone with basic data. Scuba divers could send text messages to each
other, for instance, while search and rescue teams could still contact
the outside world while they're in tunnels."