MIT finds a way for submarines to talk directly to airplanes
Submarines could send their findings directly to aircraft (including drones) circling above while remaining safely underwater, and without using boats as intermediaries.
That could keep sailors out of harm’s way, and make transmissions possible in situations where conventional ships just aren’t available.
https://www.engadget.com/amp/2018/08/21/mit-wireless-water-air-communication/