His father's form came into view beside the Moving Water Thing, and Atreides picked up the pace, short white-booted legs working faster to carry him up to the warm side of his father. "Dad!" he squeaked in greeting, though his voice was hushed. Everything was so big here, and though he had grown up within these trees and was used to the feeling there was something solemn about his father, so rather than trying to induce his dad to play as he had originally planned the boy flopped onto the ground, copying his pose and staring seriously into the water. "Whatcha doing?" he whispered, tilting his head slightly to try to see his dad while also keeping an eye on the water so he could try to see whatever his dad was looking at.