what the freq rang of xbee underwater

@ragheed
I do not understand what you try to accomplish. I can guess but that is wasting time.

Please use google translate to write a longer story (100+ words) in English as I see it is not your native language.
It will be easier for you to type it in your native language (which is not English I guess)

And yes forget about XBEE under water (see above posts)