Drowning pools:

Some cities and states have been filling in the deep ends of their pools, and new pools are less likely to have deep water.

The old-style "drowning pools" won't be missed, said aquatics expert Tom Griffiths.

"Pools found out people were breaking their necks, so they took out the boards, but then they were left with a drowning pool," with children sinking in the deep end, said Griffiths, director of aquatics at Penn State University.

The new all-shallow pools are usually no deeper than 5 feet, can accommodate more people and are seen as more appealing to families. Often they include water slides, spray toys and gradual, beach-like approaches that let people walk into the water. They are often irregularly shaped, because their design is no longer dictated by the need for lanes for serious swimmers.

Hey! I don't know if it's serious, but I swim a mile 5 days a week. And look at the SWIMMER'S GUIDE. I'm not the only lap swimmer.