I have no idea I felt compelled to google "dogs underwater" but I am so, so glad I did.
I mean, look at that!!!!
And I think this one thinks she is a sharkdog.
All of the photos I found are by Seth Casteel, who apparently is well known for his photos of dogs underwater. His pictures were in The Telegraph, and it looks like he did the ones for Peace, Love, and Pitbulls as well.
I want a job photographing dogs being ridiculous.