As many of you know, I did some commercial diving for a living. I did this over a period of several years, and the jobs were all varied and fascinating. One of these jobs entailed diving for sea urchins. For those who have not read about this period of my life, I will relate some of the techniques used. As is to be expected, there is a season in which you may harvest urchins. Of course, it is in the winter and the spring, the worst of seasons possible in terms of weather. There was a rotating crew, but the core number in the crew was three. Sometimes we would have up to five people on board. This let us have three or four divers in the water and one tender running the boat. The tenders