Together, we came up with an idea of having celebrities and retired NFL greats play flag football on the beach.

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Any British beach flying the flag has to pass the most stringent tests on beach management and safety.

BBC: Eight NI beaches win blue flags

On Friday, thousands of people piled onto the beach wearing green and yellow, many with the Brazilian flag painted on their faces.

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Any beach with a blue flag has to display its water quality results, on easy-to-read signs.

BBC: Eight NI beaches win blue flags