Things You'll Need
Instructions
Decide who will be "Marco" first. This person will try to catch the other players.
Have all players get in the pool, including "Marco."
"Marco" should keep his eyes closed at all times. He should call out "Marco!" when trying to locate the other players by the sound of their voices when they reply.
Other players must yell "Polo!" every time "Marco!" is shouted. This will help "Marco" find them.
Players should swim away from "Marco" to avoid being tagged. If "Marco" tags a player, then she instantly becomes "Marco."