BALTIMORE, Aug. 18 (UPI) -- Michael Phelps is focusing on family following his final Olympic games.
The 31-year-old athlete spent quality time with with fiancée Nicole Johnson and son Boomer on Wednesday after announcing his retirement from competitive swimming.
"There's nothing like being back home! Great way to spend my first day in retirement! @boomerrphelps @nicole.m.johnson," he captioned a family photo of himself, Johnson and Boomer in a pool.
Phelps and Johnson got engaged in February 2015 and welcomed Boomer in May. The five-time Olympian was enthusiastic about teaching his son to swim when he spoke to USA Today in June.
"I'd really like to get him in the water to see how he reacts," he said. "He loves baths, so he feels very relaxed in the water. Very at home. Maybe he'll feel the same when he's in the pool!"
Boomer had stolen the show during Phelps' gold medal swim Aug. 7 at the 2016 Summer Olympics in Rio. The new dad won four other gold medals at this year's games, but was adamant about his retirement Monday on Today.
"Done, done, done -- and this time I mean it," he told host Matt Lauer. "I wanted to come back and finish my career how I wanted and this was the cherry on top of the cake."
Phelps had previously insisted he was retiring after the 2012 Summer Olympics in London. The athlete is the most decorated Olympian of all time, having won a total of 28 medals -- 23 of them gold.