Hi VR people!
Here is the showcase of my first try underwater panorama shot on 8m depth in Blue Hole dive site near Dahab, Egypt.
http://blog.ivvi.name/arc/196#more-196
The panorama was a really stitching challenge as far as it was shot during 2 dives without oxygen (freediving) without a tripod as well)
The first dive shot was made downside by my friend to capture the air bubble ring made by me from 10 meters depth, than I took a camera and dived into "the same place" and shot the rest of the panorama. There was only an Digicam aquapack which was crop the angle of view from 8mm lens dramatically, so there was approximately 30 shots to stitch into sphere.