Oh the water is really warm in the summer!
It's at the Costa Brava
And I think yes you could do everything you describe there 
ohhhhhh ... I'll just pretend I'm there, I guess

. Of course, it's not the same as actually being there.
And there are fishies and fishermen too, I think
it's a stony beach though, you might want to wear sandals.
Once, when I was snorkeling in a tropical place, suddenly I was in a huge school of little fishies and they just were flashing all around. That was fun! I'll wear sandals, even in my imagination

(and, in my imagination, they're really pretty sandals, too, and I'll wear a toe ring).
Oh and one more remark: I think I react quite sensitively on names and "Sa Tuna" sounded so musical to me, and a bit mysterious too, so I think that's a part of why I felt inspired to play this.
Hmmm, I like that. Sa Tuna ... as musical-ness. It's nice to learn more on how people work

.