The kraken is found lying dead on the beach in Pirates of the Caribbean: At World's End. How did it end up dead?
One of my friends suggested it might have been the horrible tasting Capn. Jack Sparrow, but I disagreed.
From the Kraken wikipedia:
...but it has been killed by Davy Jones under Lord Beckett's command. Davy Jones kills the Kraken by commanding it to beach itself on the island