Kraken live in the water and are possibly the largest of all ocean creatures. Even the largest ships to ply the oceans of this world have been attacked by hungry Kraken seeking a meal.
Kraken exist in the Seas and Oceans.
Kraken are carnivores hunting everything above or below the waves. It is possible their are omnivorous variants that can digest sea plants, though no one has ever seen them do so.
Kraken are loners. Adults meet exclusively to mate and then part again. Even their offspring flee from their mothers to make their own way as best they can.