One day your class have a swimming class with your classmates. The swimming pool area is so crowded, some people are bumped with each other

Claude's standing at almost the edge of swimming pool, but he didn't realize it. He's busy wearing his goggle, when somebody bumped on him, and he fell into the pool

Everyone gets panicked, as the pool guards help him out from the pool, but he's unconscious. Unfortunately you are near the guards, as they told you to give him artificial respiration