Underwater walkie-talkies could work long-distance with radio trick

Divers could quickly talk underwater over giant distances by sending radio messages alongside the water’s floor, getting round the truth that radio frequencies can’t journey far via water.

Alternative communication techniques that use sound, reminiscent of sonar, can transmit throughout lengthy distances underwater, however these strategies can’t carry giant quantities of data, are comparatively sluggish to achieve their recipient and may disturb marine wildlife.

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