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A photographer tries an underwater camera before the Men's Single Sculls Quarterfinal rowing competition at the Lagoa stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 9, 2016. / AFP / Damien MEYER (Photo credit should read DAMIEN MEYER/AFP/Getty Images)

A photographer tries an underwater camera before the Men's Single Sculls Quarterfinal rowing competition at the Lagoa stadium during the Rio 2016 Olympic Games in Rio de Janeiro on August 9, 2016. / AFP / Damien MEYER        (Photo credit should read DAMIEN MEYER/AFP/Getty Images)