Michael Phelps spent his first day of retirement in a pool with his son Boomer

Though there are rumors that he might still swim in Tokyo, legendary OlympianMichael Phelps says that he's officially retired from swimming.He's leaving on quite the high note: Phelps won a lotof new hardware in Rio, bringing his career total to 28 medals, 23 of which aregold.But it seems Phelps couldn't stay away out of the water for too long. Wednesday, he shared a photo on Instagram showing him relaxing in a pool with his son Boomer and hisfianceNicole Johnson."There's nothing like being back home!!" he wrote in the caption. "Great way to spend my first day in retirement!!"Here's the adorable family photo: A photo posted by Michael Phelps (@m_phelps00)on Aug 17, 2016 at 12:03pm PDT Three-month-old Boomer became almost as famous as his dad during the Olympic games ' photographers captured him pullingsome greatfacesas he took in the action from the stands. PSA: He's also got his own Instagram, and it's well worth following. A photo posted by boomer phelps (@boomerrphelps)on Aug 10, 2016 at 5:27pm PDT Join the conversation about this storyNOW WATCH: Here's the truth behind the cupping therapy that's giving Michael Phelps red circles on his back
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