Wallowa,
We have a lot in common. I started diving in 1959, and am still diving. I wasn’t certified until 1963, when our high school dive club imported Roy France from LA County. I started diving on a used Healthways Scuba regulator, and then switched to a Healthways Scuba Star single hose regulator. I’ve been diving continuously since, and am still diving at age 78.
Below is a photo I took in the Tualatin River last summer, of the Asian clam infestation. I’ve got a degree in zoology from Oregon State University, but was never able to establish myself in that field, and so proceeded to occupational safety and health. I have a long history in diving, and enjoy evaluating equipment, determining a better BCD (my Para-Sea BC design, patented), and underwater swimming techniques. I also enjoy underwater photography, and you can see the syphons of the Asian clams below, which ODFW considers an invasive species.
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SeaRat