According to sources, this iceberg was photographed from the ship "Prinz Adalbert" on the morning of April 15th - the same day the Titanic sank. Those on the ship thought the berg strange because of a reported red smear near its base - the same color of the Titanic's keel. The ice, however, does not show signs of impact consistent with a collision. Some have chalked the strange color up to bacteria that often form layers on bergs.