When a swim team is massive in numbers and vastly diverse in speed, coaches come up with lots of exercises that work for all the team members. This is one of them. It’s probably not the favorite for the coach who has to stand there and get soaked or the high school swimmer who has to kick for 5 minutes straight, but it does makes a great comic strip. There is lots of goofing off with this exercise and lots of water that purposely goes on the pool deck.
Anyway, no one was hurt while making these comics!