Seth Casteel never expected his photos of dogs to make a big splash, but then again, he never expected one of his canine clients to jump into a pool during a shot. This is the book cover for Casteel's "Underwater Dogs."

This is Foster, a dachshund, 6 years old. 

This is Oshi, a cocker spaniel, 6 years old. 

This is Remi, a Labrador Retreiver, 5 years old. 

This is Herbie, an English Bulldog, 2 years old. 

This is Buster, a Cavalier King Charles Spaniel, 6 years old. 

This is Rocco, a Boston Terrier, 7 years old. 

This is Dagmar, a Chesapeake Bay Retreiver, 10 years old.

This is Alex, a Labrador Retriever, 7 years old. 

This is Coraline, an Olde English Bulldogge, 2 years old.