Yes, this aggregating anemone (not a giant green) was photographed from out of the water. I was shooting at an angle, through perhaps a foot thick of water.

I've been developing a series of techniques for intertidal photography, but it would probably be easiest to just get myself a waterproof housing and waterproof flash.

By the way, I get soaked all over when I do tidepool photography. And I don't wear boots.