[thyrsus]

I've seen the image several times, and I'd always assumed it was a painting, using photo-realist techniques.

[protomyth]

Yeah, I thought it was someone that does the background painting for movies. The physics of taking that photograph just didn't seem possible.

[Animats]

It would be a real challenge to actually photograph the entire underwater part of an iceberg. It's probably never been done. If you could find one in clear water, and set off some enormous set of flashes underwater, it just might be possible. That would be a good project for National Geographic.

[protomyth]

I'm not sure the local whale population would be too happy with setting off something underwater to generate that much light. Would be interesting, though.