Thank you. I have a membership at the Y and have tried swimming. It was going pretty good, until my neck pain got worse. Last time I was there swimming laps, I found that turning my head to breathe was hard on my neck. So I ended up alternating onto my back, frequently, to breathe. I noticed an elderly gent using a snorkel. I've come to understand why he might find it useful, and I plan to get one.

Thank you your recommendation. I'm glad it's working for you.