Maybe you don't like to be in the water (gasp!), but you can be on the water. You may want to give kayaking a go. If the sit-in kayaks are too difficult for you, you may wish to try the sit-on type, like I recently did.
Initially, I had to be helped to be lowered down onto the kayak then pushed away from the shore. I discovered that I could do it myself by pushing the kayak into thigh-deep water. I then sat on the edge and reached for the far side with one hand, while pivoting onto the seat. Yes, I did get a wet bum but then, that's part of the fun!
I noticed a change with a few days of paddling. My shorts were looser in the waist and my core felt stronger. I wan't doing hours of paddling, either. I'd consider buying one if I didn't have to put it on the roof in order to transport it. That's beyond my capabilities. I need to win that lottery (I rarely buy tickets for) in order to have beach-front property! *Dreaming*
Which brings me to an important stress addressing tip. Recall the feelings you had while doing experiences you love (like kayaking on a beautiful lake), in order to bring about a change in your stress level. Notice what happens while you relive your joy/excitement/love.
If you'd like to dive deeper into the techniques to transform your stress, I offer coaching programs.
Kayaking doesn't have to be a solitary activity. My sister and I enjoyed a few "Race you!" times, as well as some float-and-chat times. A fine combination, indeed.
As always, stay safe. Know your limits and capabilities. Watch the weather.