While diving in the Florida Keys, halfway through a dive I spotted a 5 lb weight on the bottom with a small piece of webbing. So I picked it up, carried if for the rest of the dive and brought it back on the boat. An instructor saw it when he got back onto the boat and asked who retrieved it. Apparently he was running a student through search and recovery.... I asked if he would sign off on the cert for me since I found it and recovered it. :~) Fortunately he had a sense of humor about it. Before the next dive, he loudly told the entire boat about the search and recovery.