Maelstrom

The Maelstrom was created by the goddess Calypso, who had been released from her human bonds shortly before. The Maelstrom was a massive whirlpool topped with what seemed to be a hurricane. In the heart of the Maelstrom was the Black Pearland the Flying Dutchman, who were locked in an epic battle. After the conflict, during which Davy Jones was killed and William Turner made captain of the Flying Dutchman, the Maelstrom subsided. The Maelstrom contains frequent lightning in its center and cast heavy rain on the surrounding ocean. There has been no earlier mention of the Maelstrom in any preceding Pirates media, but it has been mentioned in several othe works, including Jules Verne's 20 Thousand Leagues Under the Sea.