Iceberg picture is courtesy of a "Rig Manager" for "Global Marine Drilling" in St. Johns, Newfoundland. These are diverted from the rigs by towing them with ships! In this particular case the water was calm & the sun was almost directly overhead so the diver was able to get into the water and take this picture. They estimated the weight at 300,000,000 tons.

The date on the jpeg is December 4, 2007.