A couple watches fireworks exploding over Copacabana Beach in Rio de Janeiro on Jan. 1. Some 2 million people visit the beach on New Year's Eve. Lifeguards say they usually perform more rescues than any other time of the year.
Doheny Beach in Orange County, Calif. photographed in 2005. A new report on the nation's beaches found that Doheny exceeded at least one water quality standard 42 percent of the time it was tested in 2010.