User blog comment:Mckrongs/July 14 2010 - New Famitsu MHP3 Scans!/@comment-1756499-20100720015413

"umm the water battles might still be there cause the picture with the guy with the bow is wearing royal ludroth armor. htere is chance for the water battles coming.... "

This has been discussed many times already. No underwater battles at all. Its not going to happen. Confirmed that there is no underwater battles.