Little known survivors.
47 elephants and dancing bears survived the sinking of the Titanic and got jobs in New York thereafter.

A close call.
The last photograph of the Titanic was taken by Fr. Brown from Queenstown (now Cobh) pier in County Cork. Fr Brown disembarked at Cobh but was asked to stay on until America. His Jesuit seniors refused him permission and Fr. Brown went on to become a world famous photographer during the Great War and the years following it.

A movie oops!
When Jack walks through the french doors for dinner with Rose and her family, a camera man's reflection can be seen on the glass

More movie oops!
Jack Dawson said that he learned some of his sense of seamanshiip near his home near Chippewa Falls, Wisconsin, on Lake Wissota. Trouble is, Lake Wissota was not even there until 1917, five years after the Titanic hit bottom.

Go on then, just a few more...
Captain Smith is wearing contact lenses. Rose's collection of paintings include very famous pieces that were never on the Titanic (Monet's Water Lilies and Picasso's Les Demoiselles d'Avignon). The verses they sing at the worship service weren't added to the hymn until around 1937. Molly Brown wasn't called Molly until after she was rescued. When Rose's picture is being drawn, the artist is left-handed, but they show Jack as being right-handed. (James Cameron drew the picture).

Taking Leo's seat?
Two dogs survived the sinking of Titanic, yes that's right, two DOGS survived. They escaped on early lifeboats carrying so few people that no one objected. Miss Margaret Hays of New York brought her Pomeranian with her in lifeboat No. 7, while Henry Sleeper Harper of the publishing family boarded boat No. 3 with his Pekinese, Sun Yat Sen.

Just one more movie oops!
In the movie, a man with a yellow shirt and a black moustache fell off the boat and drowned. Five minutes later the same exact man was seen playing the violin with two other men.