Communication Between Buddies
Diving takes place in what Cousteau so poetically labelled "The Silent World". The relative silence of the sea is one of the very enjoyable aspects of scuba diving, but it does not help foster natural means of communication within a buddy team. Unless a significant investment is made in expensive full-face masks that incorporate through-water voice transmission capabilities, the buddy divers must necessarily communicate via some other (and cheaper) non-audible means. Two main approaches exist to provide such communication in recreational diving - standardized hand signals and submersible writing slates.
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