using a scanner from a boat

[dave sharky]

Can any one tell me if i sit in a boat with a scanner that can go 30 plus feet say im in ten feet will it tell me gold or silver then i will jump in fast with a water detector there are shark,s i know very stupid but mean,s a lot to me thank,s.

 

[Rawhide]

A scanner, what type of gold scanner are you talking about?