Fully grown sea serpents can be longer than ships, and they hunt massive prey. They have been known to attack ships, dragging them beneath the waves with their massive coils, and devouring entire crews in a single gulp, before dragging the husks away to build their nests. They can live for centuries, and a single sea serpent's nest might have ships from eras ago, long thought vanished. Their nests also often have the treasures of their victims, but the sea serpents care little for such trinkets.