ATREYU SHOULD HAVE SUNK WITH ARTAX. ATREYU WASN’T AFFECTED BY THE SWAMPS OF SADNESS. HE SOBBED LIKE A BABY AS HE CRAWLED THROUGH THE SWAMPS OF COURSE HE WAS AFFECTED BY THE SADNESS. HE WASN’T SAD BECAUSE OF THE SWAMP HE WAS SAD BECAUSE HE LOST HIS HORSE. HE NEVER REALLY LOVED ARTAX!