What is the Kraken's natural enemy?

Excuse me, could you please elaborate on the concept of the Kraken's natural enemy? Is there a specific creature or force that is known to be the natural predator or adversary of the mythical sea monster known as the Kraken? Or is this a hypothetical question, asking us to speculate on what might pose a threat to such a formidable beast? Additionally, could you provide some context or background information on the Kraken itself, as it appears to be a creature rooted in folklore and mythology?