According to NASA, a Fata Morgana can:
"make strange shapes or a false wall of water appear above a watery horizon . . . [S]uch a Fata Morgana mirage might have obscured real icebergs from the clear view of crew onboard the Titanic."This notion is supported by a report from a nearby vessel, the S.S. Californian, that said they saw just such a mirage. Even a hundred years later, the story of the Titanic's ill-fated voyage remains haunting. I will always be fascinated by the Titanic. It stands alone (if we can keep that damn Cameron fellow away from it).