Can You Spot the Drowning Child in This Video?

MICHAEL SMITH: If your child were in trouble, would you know it? Here is a test. See if you can find the person who's drowning before the lifeguard does.

[CHILDREN PLAYING AND SHOUTING]

[SPLASHING]

[CHILDREN PLAYING AND SHOUTING]

[WHISTLE BLOWING]

[CHILDREN PLAYING AND SHOUTING]

SPEAKER: You OK?

MICHAEL SMITH: Did you miss it? Take a look again, and watch this child. It's tough to spot even though you knew it was going to happen. Drowning can happen fast, and it doesn't always look how you'd expect.

Here is how to keep your kids safe this summer.

First, teach them to swim. Even toddlers can learn how.

Next, use a buddy system. Have kids keep an eye on each other and only swim in places where a lifeguard is on duty. The more eyes, the better.

Also, while floating toys can seem fun and safe, they're not designed to save lives and they can give you a false sense of security.

Finally, don't get distracted. When young kids are in the water, keep your eyes on them. Maybe even take a lifeguard class yourself so you'll recognize signs of trouble.

These important tips will help everyone have fun in the sun. For WebMD, I'm Dr. Michael Smith.