Here's a photo series that is both too cute and adorable. Taken by award-winning photographer Seth Casteel  he started out with his own dog. He says,
As I watched him dive in over and over again chasing his favorite mini tennis ball, I thought, “What does he look like under there?”

I left, bought a little point-and-shoot underwater camera, zipped back, and jumped in.

Now, he's gone ahead to make a whole series of Underwater Dogs. Check out the gallery below:

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