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Scuba divers get their own underwater comms network


Most teenagers would probably tell you that theyd die if you took away nonverbal communication, but one subset of our population actually could: scuba divers. They cant exactly send texts via smartphone to one another because saltwater, and water in general, makes it hard to transmit information between dive buddies using traditional methods like electromagnetic waves and even sound waves. And as The Verge points out, hand signals only work if the other person is paying attention to you.

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