Some of the most amazing underwater views of dogs. It sounds like the photographer is pretty cool, too. He's using his success to help. Very cool.
The last time we caught up with Seth Casteel, his underwater dog photos had gone viral across the globe and more than 1,000 people had contacted him about shooting their personal K-9s.
Earlier this week his 144-page book Underwater Dogs was released and at one point was the number eight best-seller on Amazon (several previously unreleased photos from that book that were shot after the first viral surge are included in the gallery above).
When we tracked Casteel down on Thursday, he was lounging poolside in Las Vegas and was scheduled to speak at an annual event for the Best Friends Animal Society sometime today.