This pix was taken on the "Big Island" of Hawaii. This is the ocean entry point of the Kilauea eruption. The red you see is the explosive reaction as the lava makes contact with the ocean. Commonly referred to as the Waikupanaha plume.
There are more shots of this in my photostream. This was taken in infrared (B+W 092 filter) on my Canon Powershot S2-IS.
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