Have you ever tried Treasure hunt - This will hel you!

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Underwater Treasure hunting, Sounds Tempting, hmmm...... I think treasure hunt is one of the most exiting outdoor activity. But u know underwater hunting is actually very difficult and also very dangerous. So i have some information for those who like go for underwater hunting. What i am talking about is Underwater Metal detectors which are of three types. 1. pulse induction The pulse induction or PI underwater metal detectors are recommended for use in and near salt water. They are not very accurate so you may have to go through finding some trash before you locate your sunken treasure. 2. very low frequency very low frequency underwater metal detectors are keen and accurate in picking out sunken treasure 3. broad band spectrum detectors broadband spectrum underwater detectors offers greater depth than the other kinds. BBS frequencies have better and greater discriminate ion as well as the accuracy it gives. I know its a bit technical but i think there are so many people out there who understand this.