KENMORE, Wash. -- Swimming practice turned into a dramatic rescue for four young synchronized swimmers who nearly drowned on Monday.

The girls were practicing at St. Edward's State Park when three of the swimmers ran into trouble. They came up to the edge of the pool then drifted back under the water. A fourth swimmer was pulled out before she started sinking.

"Three girls actually passed out while they were swimming," said team president Craig Penner. "And a fourth one was actually in a daze, a fog; she was as good as passed out but she was conscious. She didn't know where she was or how she got from one end of the pool to the other."

The girls, who ranged in age from 13 to 15, were training for the Seattle Synchronized Swim Team.

Coach Aleksandra Lazovic dove in, pulled out the girls and began trying to resuscitate them.

"It was seen right away. All of them came up to the edge, and that's where it happened. The coach kind of saw them going down, so she grabbed them and pulled them out," said Battalion Chief Michael Jones with Northshore Fire and Rescue.

"She told me she was scared at first because they didn't start breathing right away. None of them were unconscious for very long," Penner said.

The four girls were taken to three different hospitals for observation. All are said to be in satisfactory condition.

First responders checked the air quality at the pool and deemed it safe. They then called the health department to check the water's chemical level. A high chlorine content can build a vapor right on the surface of the water where a swimmer comes up to breathe.

"Chlorine is something I have dealt with before. It's just something that gets out of their system. If it was low oxygen, then once they get oxygen back they should be fine," Jones said.

The pool has been closed as a precaution.

The swim team has been training at the pool for years. The girls are expected to return when the water testing is complete and the pool reopens.

"We just want to know what it is so we can feel safe and secure again," said Penner.