Wow 21. More scuba diving and scuba talk. Shellie Howard talks about her open water certification and Jim. Darrin & Mac discuss their chamber dive. How narced did they get? Also scuba in the news. The one-year anniversary of the sinking of the USS Vandenberg, Divers Recover Discarded Toilets Off Malibu Coast, The Revolution of Science Through SCUBA, OIL SPILL UPDATE: Questions and answers from the Florida Keys Dept. of Tourism, Malaysian conference contributes to the future of scuba diving industry and Mudsharks clean beaches, boat launches.