One of the biggest tragedies in history is still being remembered to this day. April 10th marks the 100th anniversary the “unsinkable” ship Titanic set sail on the Atlantic to only strike an iceberg days later and sink to the bottom to the ocean floor. There have been dozens of movies and specials telling the tragic tale of the Titanic, the most famous being James Cameron’s 1997 Oscar-winning film which was re-released in 3D last week.

Though the movie dramatically portrayed the ship’s fateful journey, it’s shocking to find out that there are some Tweeters who’ve admitted that they didn’t realize that the movie Titanic was based off a true event. Read some of those tweets here!

Omg didn't know the titanic was based on a true story!!!!—
seanna bratchford♡ (@seannagrace72) April 07, 2012

Sooooo I didn't know the Titanic was a real ship that sank…—
Patrice McCullough (@So_ProVODKAtive) April 07, 2012

Was the Titanic a real boat ?—
April 14th (@loveBITES__) April 04, 2012

just realized that the titanic actually sunk & was a real boat & wasn't just a movie #sostupid—
nicolette svede (@nickisvedee) April 06, 2012

Am I the only one who didn't know the Titanic is a true story?—
Linsea J. (@youlove_linsea) April 07, 2012

This might sound stupid but is the titanic a real story? Like did it really sink?—
jodzzzz † (@JodieTeamMollie) April 01, 2012

I never knew titanic actually happened—
A n t w a n (@TheBestMFyet) April 05, 2012

Wait, so titanic was a real ship?—
camilo barrios (@_camelow) April 03, 2012

oh wait! Titanic really happened? I thought it was just a movie?—
Sue Dcruz (@Sue_Dcruz) April 07, 2012

I thought the Titanic was just a movie. I didn't know it was real tho.—
Dirty Dan. ⚓ (@tiffany_br) April 06, 2012

[Source: Twister Sifter]