HAVANA — US endurance swimmer Diana Nyad will attempt to swim from Cuba to Florida this weekend, better prepared for the sharks, venomous jellyfish and powerful Gulf Stream currents that foiled her four previous attempts at the 103-mile (166-km) crossing. If she succeeds, Nyad, 64, would become the world record holder for the longest unassisted open ocean swim, meaning no shark cage protected her during the swim. Equipment emitting a mild electric current in the water should keep sharks at bay. Nyad said on Friday that a protective silicone mask would better protect her from the poisonous jellyfish that forced her to end one of two attempted crossings last year. — Reuters
