Michael Phelps has done a lot in his life inside and outside the pool, but last Saturday he did something that he's never done--visited Maine.

Phelps, a 22-time Olympic medal winner, 18 of them gold, visited Maine, the home state of his agent Peter Carlisle, and stayed from Saturday to Wednesday. Phelps had a busy agenda while visiting, and even though the swimmer is retired from competition, he even swam a short ocean leg of a relay race.

"I literally walked over and put my foot in and I was like, this isn't going to be that bad," Phelps said about his first dip into the oceans of Maine, according to the Portland Press Herald. "I should be alright to swim like 40 or 50 meters in it easily. And I jump in take like 5 strokes and everything I felt like shut down, like my whole body just shut down and went numb. And I was like this is not what I want to do right now."

The freezing dip into the ocean wasn't the only time Phelps put on a bathing suit in Maine. Phelps went into the water at a new training facility called the Michael Phelps Skill Center in Saco, M.E. Several high school swim coaches were on hand to watch Phelps get in the pool and also had the opportunity to ask him questions.

A video of Phelps in Saco can be seen below:

The training facility is part of a program designed in connection to the Olympian's swim school in Baltimore. Phelps told the Portland Press Herald that the spa was created for many reasons. First, the spa allows children to swim in water which the temperatures can be regulated and cameras film the kid's sessions for instant feedback. The facility can also be used for competitive swimmers, recreational and fitness swimmers and swimmers in need of aqua therapy.

Phelps, 28, said he "had a blast" while in Maine and even tried his first lobster on the trip. He tweeted the following:

Phelps, who was adamant about retiring after the 2012 Olympics, made headlines in July after leaving the future open of a possible return to the 2016 Summer Olympic Games in Rio.

"I don't know what's going to happen in the future," Phelps said to the Associated Press last month. "I don't know what's going to happen tomorrow."