Got to dive with Hammerheads in Hawaii last week, the difference a rebreather makes? I saw around 200 hammerheads and two Galapagos sharks. The open circuit divers on the boat saw two sharks
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http://www.scubaboard.com/forums/un...227-rebreather-diving-hammerheads-hawaii.html
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http://www.scubaboard.com/forums/un...227-rebreather-diving-hammerheads-hawaii.html