Number of city pools and their hot pots I've swum in throughout Iceland: 10
Additional bathing areas: 2 lagoons, one geothermal river, one geothermal beach, one oceanside hot footbath, and one hotspring cave.
Times I've swam in the ocean here: 3
Degrees of said ocean: 7, 11, and 12 (Celsius, though even in Fahrenheit it's still darn cold). And then right after that I jump in the hot water by the beach, otherwise I don't think I could do it.
I hope to add a natural countryside hot pot in here before too long! As long as it's not too green and slimy, that just kinda freaks me out.