An "EMP shield"... that doesn't interfere with sonar equipment mapping the object, or cameras used to photograph the object, or the remotely operated underwater vehicle carrying the cameras...
Hmm.
Never mind all the pseudo-science, the most important piece of information I've so far read about this "object" is:
"Diver Peter Lindberg is hoping to take wealthy tourists down in a submarine to see the object..."
(http://i1162.photobucket.com/albums/q528/shakeyjake3/suckers.jpg)