Abstract: An underwater diving system including a raft configured to support and carry a compressed air tank in such a manner that the raft is extremely stable and is self-bailing and self-righting because of its configuration, a diving harness communicating with the on-board compressed air source so that the diver is tethered and tows the raft while diving underwater at nominal depths up to 20 feet, for example. The diving system described herein bridges the gap that exists between snorkeling and scuba diving.