sentence: There are some swimmers playing water polo in an indoor swimming pool. sentence:  One of the swimmers is underwater, trying to reach the ball. sentence:  He throws the ball across to another swimmer who catches the ball. sentence:  Two swimmers are under water trying to reach the ball. sentence:  They pass the ball around as they swim through the water. sentence:  Then the swimmers swim their way up and get out of the pool while some other swimmers are still inside the pool. sentence:  One of the swimmers spits out water on the camera while still inside the pool. sentence:  A few other swimmerd can be seen in the locker room drying themselves after the swim.