The interesting thing about this turtle is that while man is not a very old species (2 million years), some species such as dogs and the infamous internet kittens (and ferrets actually) are very new species and don't even exist outside of domesication, that is, in nature, in their present form.
But this guy? This picture could have been taken in the past, so long ago that the caption could read "50 million years later T. rex would show up" and the photo would look the same then as now.
I think often as kids we wish and imagine we could see just one photo of "the dinosaur age" and yeah that would be great, but, on a certain day, in a certain place it would look like this. Not similar to this, this is what it really did look like in Jurassic (actually much older) ocean.