Seth Casteel, a photographer in Venice, California, has developed a specialty by capturing his subjects underwater. He makes crisp, clear images that show his subjects at perfect moments.
In the past we've seen Casteel apply his skills to puppies and adult dogs. His most recent photo book is Underwater Babies. You can guess what it shows: adorable babies swimming joyfully underwater. They're often costumed, such as the mermaid you see above. You can see more sample images here.
-via Flavorwire
See more about baby and kids at NeatoBambino