D.B.
Check your local drug store or check with your pediatrician for drops that are safe for kids. When my son was little he would get an ear ache every time he swam in our pool, so we bought some ear plugs that mold to his ears...I think I got them at Walmart. His pediatrician also suggested using a blow dryer on a cooler setting and blowing it in his ears to help the water dry up.