"Hi Bill,

I hear you. This will only really be of great interest with FPV video. We have been researching for a while on ways to do high speed communications underwater with no great solution.

For now, we are adding a sonar and have the vehicle do…"

"Others have been working on wireless communication underwater for decades. that is not our focus. But there are some acoustic modems that would be capable of low frame rate, low-res real-time video transmission. Our focus with this initial prototype…"

"Check out our flying+diving quadrotor demo here:
https://www.youtube.com/watch?v=STRijGJ5qtI"