Summer swimming. We dream about it all year long, under the city drizzle, and then finally August arrives. When it's time to leave, we fill our suitcases with masks and snorkels, sunscreen and outfits for evenings by the water, and head for the coast. Whether we prefer the ocean waves or the gentle Mediterranean, cruises in the Cyclades or tropical climates, the rugged rocks of the North Sea or mountain lakes, summer swimming is a luxury we couldn't do without. Sea, sex and sun...