<P> Davy Jones, a human and a great sailor, fell in love with Calypso, a sea goddess . She entrusted him with the task of ferrying the souls of those who died at sea to the next world . Calypso gave him the Flying Dutchman to accomplish this task . She swore that after ten years, she would meet him and they would spend one day together before he returned to his duties . However, when Jones returned to shore after ten years, Calypso failed to appear . Believing Calypso had betrayed him, a heartbroken and enraged Davy Jones turned the Pirate Brethren against her, saying that if she were removed from the world, they would be able to claim the seas for themselves . They assembled in the First Brethren Court and Jones taught them how to imprison her into her human form . </P> <P> Despite betraying her, Jones still loved Calypso, and in despair and guilt for what he had done, he carved out his own heart and placed it in the "Dead Man's Chest". The Chest was sealed and placed within a larger wooden chest, along with Jones' numerous love letters to Calypso and all other items having to do with her, except his matching musical locket . The chest was then buried on Isla Cruces . Jones kept the chest's key with him at all times . With Calypso gone, Jones abandoned his duties and returned to the Seven Seas . As a result of this, Jones gradually became monstrous, his physical appearance merging with various aquatic fauna . Sailors everywhere would fear him to the death, for Davy Jones had turned fierce and cruel, with an insatiable taste for all things brutal . Jones recruits dying sailors by promising them a reprieve from death in exchange for 100 years of service aboard the Dutchman . He comes to command the Kraken, a feared mythological sea monster . </P> <P> In the book series about Jack Sparrow's earlier adventures, Davy Jones shows interest in the Sword of Cortes, also sought by Jack . He is a minor character, but appears in the seventh book as Jack and his crew encounter the Flying Dutchman . </P> <P> Jones also appears in the prequel book about Jack's first years as a captain . He helps the Brethren Court to identify the traitor among them, who turns out to be Borya Palachnik, the Pirate Lord of the Caspian Sea . </P>

What's with the crabs in pirates of the caribbean