I dunno Hal, this doesn't seem to fit in with some of your other feedbacks. I'm not sure what you are complaining about. Where or what's the Beef?
I too have done a little diving (not much, but some) but, I spent the major part of my life at sea as a commercial fishermen, & I still find these photos interesting & of really good quality, color & resolution.
As to your comment about man made things disappearing, the same holds true for natural items at some point in time, that's just the way it works. Yet, even those man made reefs, will likely be there after we're both long gone.
The only suggestion that I have regarding these images & similar galleries, it that they don't usually include enough information as to their locations, i.e., they mention a reef or sanctuary but don't say exactly where they are located. A little more detail would be helpful, as it otherwise would require too much searching. Although I do know where Stellwagen Bank is located.