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Marv, I have not heard of a SCUBA certification that expires. That said, if someone has not been practicing the skills lately, then easing back into it with some instruction is highly recommended. The equipment has changed a LOT since the '60s.
Otto, my ears were inspected by a pro, and found to be clear of wax. Yesterday at about 12 feet I had trouble equalizing one ear. Instructor took me to a shallower depth where the problem began to resolve. I think we are going to around 60 feet today, so those ears HAVE to work.
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Man of Carbon Fiber (stronger than steel)
Mocha 1978 911SC. "Coco"
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