Commentary My friend struggled into his wetsuit. It was a warm, sunny Mediterranean day. I was driving a small motorboat across the bay from the biology research station to Calvi. “I cannot believe people do this for pleasure,” Daniel grumbled. Sweat was dripping down his forehead. His beard was wet and he wore a grumpy but very funny expression on his face. He put on weight and his wetsuit was hard to get on. Daniel Bay and I had been doing research on the effects of pollution in the Bay of Calvi. Calvi is a walled citadel city in the north of the Island of Corsica in the Mediterranean Sea about a hundred miles west of Nice. Corsica is French but its history and people trace their ancestry to many civilizations. French, Italian, and a Corsican dialect are spoken on the island. Tourism, agriculture, and fishing are the main occupations …