Some notable swimming legends, including the greatest ever, said their goodbyes after the Rio Olympics, while others have emerged as must-watch stars. Catch up on everything that's happened in the world of swimming since Rio.

Ready up for the U.S Olympic Trials in swimming, where Team USA's latest swimming squad will take shape.

Swimming may look simple from afar, but the devil is in the details when it comes to the important rules of the sport.

Time to turn up the heats. Brush up on the format of swimming events at the Olympic games, from heats to finals.

Freestyle. Backstroke. Breaststroke. Butterfly. Learn what makes each of these strokes unique and how the world's best swimmers perfect them.

Yes, it time to break out the Speedos. In fact, the gear worn by Olympic swimmers has been a point of contention across swimming's modern history. See what the sport has settled on for the Tokyo Olympics.

Learn about the brand new Tokyo Aquatics Center, which will host swimming at the Tokyo Olympics.

Swimming is one of the oldest Olympic sports and one of the only sports to take place at every modern Olympics. Relive the greatest moments to ever happen inside (and outside) an Olympic swimming pool.

Learn the lingo of swimming ahead of the Tokyo Olympics.