If there's one thing I used to fear about single-board computers, and the Raspberry Pi in particular, it was their ability to function underwater. While most people wouldn't submerge a Raspberry Pi, ...

The technology, which uses ultrasound, enables real-time communication between submerged divers and surface vessels, as well as among divers themselves Mediterranean seabass and seabream farmer ...

Because GPS doesn't work underwater, divers usually can't track their real-time position on a digital map. The new Diver Navigation System (DNS) gets around that problem, however, using both floating ...

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!699331~!0#focus ...