Tia Dalma, played by Naomie Harris, is a fictional character from the movie Pirates of the Caribbean: Dead Man's Chest and a primary character in the movie Pirates of the Caribbean: At World's End, in which a significant amount of the plot revolves around her and her powers. It is revealed in At World's End that she is actually the sea goddess Calypso.
Read more about Tia Dalma: Name, Character History, Pirates of The Caribbean: Dead Man's Chest, Pirates of The Caribbean: At World's End, Personality and Appearance