A swimmer stands out thanks to his yellow security cap while taking a dip in Lake Zurich on Monday, June 27. As a preventative measure against the frequent swimming accidents that occur in Zurich's lakes during the summer, the Swiss city has undertaken a new safety intitiative: Bathing caps like the one seen here will be distributed to swimmers for free. The brightly-colored caps make swimmers more visible to boats above the water. The campaign, "Smart Swimmers Live Longer," launched on Monday.