People diving in cold water do indeed often put a little extra air in the suit (and thus carry more lead) in order to stay warmer. A sadly departed ScubaBoard regular, TSandM, offered the equation lead = warmth.
Tomorrow it's exactly 3 years to the day. Every year on this day I still cry. Of all of the people I've ever dived with the click with her was almost physical. We both felt it. It was like we were co-joined twins underwater. The only other person I've ever had this with was my regular dive buddy with whom I can communicate without using hand-signs..... She was truly and in many respects, unique.
On my next dive I'll take her a bottle of wine (she loved wine) as I do every year. I always take off the label and tape a wetnotes page in its place that says, "Lynne, you are one with the ocean and in the ocean I visit you. Rest in peace, my friend".
Then the day after some wino comes and takes the bottle home again xD. Every year I need to get more creative about where I hide it because I think the guy (and it must be a guy) has it figured out that I do this.
R..