請問這裏家長有搞水下通信的嗎？有問題請教：水下無線通訊

是不是無線通訊範圍很短，造價很高？

主要的通訊方式還是用一跟電纜連接下手機器人和水麵的浮標，浮標上安裝 WIFI，再跟普通device連接？

Tethered Communication: A physical umbilical cable (typically fiber-optic or twisted-pair) remains the only commercially proven, reliable method for transmitting high-bandwidth, low-latency video from an underwater vehicle to the surface.