When I went to get certified to scuba dive 80% of my class were commercial divers that needed the cert to dive for urchins $$$$$ so the Japanese people could fill their hunger. That was in 1988 or 1990 and those spiny fuc-ers were worth a mint...AKA $60k-100+ K a year diving for them. No clue if people really ate them or if they were a dic type of pill.....around the same time people killed bears for some type of magical dic pill.