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As a hugely successful Olympic swimmer it is perhaps no surprise that Michael Phelps looks as at home on the water as he does in it. The American athlete rang in the start of Fourth of July weekend 2017 on board a luxury yacht with his wife Nicole and son Boomer during a vacation to celebrate his 32nd birthday. However, with the retired swimmer recently confirming his next big race would be against a Great White shark perhaps he managed to slip a little open water training into his holiday as well.