Here's something to brighten your day—the author and photographer behind the hilarious photo books Underwater Dogs and Underwater Puppies just came out with another squee-worthy pageturner, this time featuring adorable infants taking a dip! Seth Casteel's Underwater Babies (on sale April 7, 2015) features 80 photos of wide-eyed infants, all between four and 17 months, safely submerged in a swimming pool.
As drowning is the number-one cause of accidental deaths for kids under age 5 in the U.S., Casteel hopes the book will draw attention to the importance of preventative measures, such as youth fitness classes that teach swimming. Spring break is the perfect time for your little ones to take their first lesson! Click through the slideshow below to see the priceless faces on these chubby babes—you'll be surprised at how natural and relaxed they look underwater!