This sounds very interesting.
“During my 20-year diving career, including 6000 dives, I have never seen anything like this. Normally stones don’t burn. I can’t explain what we saw, and I went down there to answer questions, but I came up with even more questions “, says Stefan Hogeborn, one of the divers at Ocean X Team.
More details here:
http://www.allvoices.com/contributed-news/12438930-baltic-sea-ufouso-disables-electronic-equipment-mystery-deepens