When it comes to not knowing how to swim, the first thing that probably comes to mind is little kids wearing inflatable swimmies on their arms, splashing around a shallow kiddie pool. You might think it's rare to find an adult who can't swim, but you'd be surprised: A study conducted by the American Red Cross back in 2014 found that nearly half of all Americans have no idea how to even doggy paddle!

In any case, plenty of people—including famous folks—don't care much for swimming: Some never learned how to swim in their early days, some have a fear of water, and others just have no desire!

Below, check out 18 celebrities you probably didn't know can't swim—or are too scared to get in the water.

Celebrities Who Can't Swim