The American Red Cross is sending out a warning today.
They say many of us don't know how to keep our kids safe in the water. For example - a recent survey shows two thirds of people think putting these inflatable arm bands, or water-wings, on kids is enough to keep them safe when a grown-up is not around.
But the Red Cross says these are not meant to be life-saving devices.
That same red cross survey found 63 percent of families with children plan on swimming in an area without a lifeguard this summer. And, nearly half of those polled had never taken swimming lessons.
Here's another concern- 9 out of ten people don't know what to do when someone is in danger of drowning.
You're supposed to yell for help, throw a floatation device, and then call 911. Unless you have the right training - you are not supposed to go into the water to try and help.