Got certified when I was 16, which was about 10, wait, 15, oh hell, about 40 years ago...
Been cave diving since the late 90s. Head to Florida or Mexico once a year to satisfy the cave diving itch.
Over years have dove Saipan, Hawaii, Maui, Lanai, American Samoa, Cozumel, Channel Islands (California), Monterey Bay and of course Colorado lakes, sometimes with ice on them.
O2