A few years ago, animal photographer Seth Casteel scored an unexpected New York Times best-seller with his collection of underwater dog photos simply titled, “Underwater Dogs.”

The collection of amazing photos became an online sensation as well.

Well, Casteel is back, and he has outdone himself with his latest edition of pooches in the pool photographs.

His latest book is titled, “Underwater Dogs: Underwater Puppies.”

Puppies photographed frolicking underwater? This might break the Internet.

The book will be available Sept. 16th, but you can enjoy a sneak peek of the photos now.