Quote from Ezzy:
LOL! Got me with that one. The one with the people in the RIB sure looks like someone poured blue dye down the sides. Great shots. Thanks for posting them. And kudos for getting the pic posting down. - EZ
That iceberg apparently broke into portions at oe point. When it broke it grew relatively smaller on the part formerly above water.
So that means the part formerly underwater and slowly melting along small potential fracture lines (the blue color is from inside and was caused by crushing pressures that show as blue ice) popped up to a certain extent.
They flip too and they look like they are from some wonderland. I may dig up a few flipped ones. lol.