Underwater photography is not a cheap activity. By the time you've got your dSLR, underwater flash and waterproof housing for your £1500 camera you've spent over £5000, so while this is an expensive hobby, the only people who can afford it are the people who are already sick at taking pictures and probably made heaps of benjamins already from taking snaps. This particular set of pictures is a blend between beauty and novelty.
Here's a little teaser -
Check out the full set here.