Pendrell Sound is famous for warm water temperatures because the tidal exchange doesn't influence the upper reaches of the Sound. Often in the 70Fs, today it was 62.8. We came among other motives to change our boat zincs. The cone and collar on the propeller and shaft were corroded, as were the two smaller zincs for the refrigerator cooling foot which is mounted on the hull. So I spent a good hour preparing for a scuba dive using my dry suit. After the work was done, I had been in the water for 45 minutes at 6-10'. I was very comfortable without a hood or gloves. Sue helped me by assisting from the dinghy, giving me the right size tool, zinc, Scotchbrite, and one replacement fastener for one I dropped into Davey Jones Locker.