Triton Bikini in the Thames, London, United Kingdom

triton bikini river thames london swim open water swimming endurance challenge charity event fundraising opportunity unique competition aquatic spectacle london landmark chilly waters thames crossing brave participants wetsuit recommended spectators welcome cheering crowds riverside event test of stamina swimming challenge personal bests fundraising goal incredible views iconic bridges historical backdrop community spirit water safety safety measures professional organization volunteer support fundraising success if applicable environmental awareness river conservation promoting clean water healthy lifestyle urban adventure testing limits personal achievement