There's probably diving in your local area. You'd be surprised, but almost everywhere has at least a few good diving spots. Quarries and lakes are common dive spots

I do a lot of diving in the midwest. Water is cold, but otherwise it's got some good diving. Ship wrecks are especially cool since cold, fresh water will preserve them for an extremely long time. Once you get drysuit certified, the cold water isn't much of an issue too

It's really cool how friendly and curious most life is underwater, and being able to move in 3 dimensions will always be amazing to me