Scuba Diving - it's great, everyone should try it. Although it's fairly expensive as hobbies go. Equalise early and often!
Got OW certified just before the pandemic (literally in the last week of feb/2020) and though the pandemic slowed me down a bit i'm now AOW+Nitrox certified and did a two week trip to St Maartin last year to dive for my Birthday.
https://adamjacobmuller.github.io/subsurface/index.html
Really fantastic hobby and suggest everyone try it!