I've had a good scan over the the North Wales Coast and on the whole, due to the good viz on the sat photos, I've picked out some good spots!
It's useful for finding (shallow) reefs and looking for new spots - all depends on the viz where you are!
If the water viz fails you, at the least it might help you pick out some suitable places to explore! Hope it helps!
Here's the link to Google Maps btw!
Google Maps=
