FWIW, two other things I recall from that trip. I did 3 days of Cabo Pulmo prior to going on the Socorro liveaboard. This being February 2016 and not November 2014 when I had last gone out with him, I recall being advised by the Cabo Pulmo dive operator Mar y Sierra to bring a jacket for the surface interval when we motored from one dive site to the next. Same line of reasoning as above, not so much because it was cold out as much as being wet from having been in mid-70's waters and being hit by the breeze. It actually felt warmer to take the upper half of the wetsuit off, and just freeze momentarily until the upper body was dried by sun and air.
And on the subject of cold, altho off-topic, the only pair of pants I took with me on that trip was one of those convertible pants where the bottom half of each pantleg zips off and on. I lost the lower halves somewhere during the trip and I got back to Boston late at night in basically shorts with the outside temperature at -2. Just the air blowing out of the opening where the luggage comes out on the baggage claim conveyor was agonizing enough. The prospects of going outside in shorts looked mighty grim. And that's when "necessity is the other of invention", as they say, kicked in: I put on my 5mm and my coat on, went outside and rode the subway home nice and toasty.
