Imagine the pattering of paws against wet cement, a whoosh of air, and a dog – say a shiny, black Labrador – leaping into a pool of water after her favorite tennis ball. Then comes the splash of her belly against the blue. Her face submerges. Her jaws grasp at the ball in an aquatic dance of determination. This is when Seth Casteel would take a picture, when his canine subject was at her most joyfully dynamic. Dog lovers beware, you are bound to fall in love with the exuberant photography of Casteel in his first coffee table book of over 80 paddling, leaping, water-loving portraits, Underwater Dogs.