A device used in beach-entry scuba dives that both assists the diver to transport scuba tanks and other diving gear to and across the shoreline, and then accompanies the diver and gear underwater. The device holds at least one scuba tank and associated gear such as a buoyancy compensator (BCD), and has a pair of wheels whose rolling position enables the loaded device to be easily transported over natural terrains. Upon reaching or while in the water the wheels may be shifted from the “rolling position” into a streamlined, free-swim position. The means attaching the scuba gear and the scuba tank are easily operated to let the user now don both scuba tank and gear and start their dive, taking the device along for the return cross-shore trip.