Endurance swimmer Lewis Pugh has completed the first of seven swims in the Seven Seas to highlight the need for protected areas in oceans around the world.
The Devon-based swimmer will be the first to undertake a long-distance swim in each of the classical Seven Seas: the Mediterranean, Adriatic, Aegean, Black Sea, Red Sea, Arabian Sea and the North Sea, ending with a 62-mile (100km) swim up the Thames to Parliament.
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