Wifi and Bluetooth might work underwater depending on the water waves but the truth is that they would not work. This is because both wifi and Bluetooth devices use 2.4GHz radio frequency which does not work well underwater- it’s due to the law of physics as the water molecules would attenuate the signal waves. More so, the Bluetooth signal is low power, the range underwater is just a few inches. The same goes for the Wifi signal. They share the same 2.4GHz radio frequency with Bluetooth signals, so the signal would easily be absorbed by water. However, there is a chance that your wifi or Bluetooth signals would work underwater depending on the water waves. If the waves are not so stormy. But generally, wifi and Bluetooth do not work well underwater, their 2.4GHz radiofrequency is just too low for that, if you are looking for an