This could be a hotly debated question. Many potential wreck divers get their training as cave divers since the training can be a little less dynamic-less variable current and visibility,not to mention being carried off into the big pond by current. The date eludes me but there was the Doria Expedition that was held that had mostly cave divers on the trip. The cave divers used their techniques for reels and continuous guideline versus the use of progressive penetration. The end result was the cave divers got further back than many of the seasoned veterans and scooped a lot of the artifacts. This was not well received due to the use of line being questionable around sharp metal,and the didn't "pay their dues".