My inner shark is back from vacation. Right from the first length, I felt smooth and fairly strong. I wasn't trying to swim hard or fast, just nice and steady in the groove. Toward the end I started to fade a bit, but I got in a solid 30 min swim. Excuse me, 30:18 for the pedants amoung you. No idea how far for sure since I wasn't watching lap times, but given my early pace it's probably 1500 m. Then another 15 min core and flexibility.
Going into the pool I'd felt a bit creaky, especially my left hip and knee, but it didn't bother me at all during the swim, and after was just fine. It's only toward the end of the afternoon that I started feeling creaky again. I'm going to try to get to bed early tonight, to get rested up for a longish (by my standards) run tomorrow morning.
Total 45 min.