Took this a few years back during a trip to Hawaii. my favorite of the whole day. It's got a few issues, but to be honest, I'm totally amazed that it came out at all. I bought the camera for the trip, and it was my first digital (and really my first camera at all that I actually "used")
Picture was taken with a Canon A610 at full zoom from a boat about 20 feet away in a light fog at dusk. What the picture doesn't show is that the waves were about 3 feet high and we were pitching and rolling all over the place trying to keep the boat in position. I snapped a bunch of shots in landscape mode on continuous mode and shot perhaps 15 images. all the others were totally motion blurred, but for some reason everything lined up in this shot.
unfortunately, I have nothing to give a sense of scale, but the "dome" of lave was perhaps 6-8 feet across.
there's no PP save for resize. C&C welcome