Maybe he's completely submerged, she thought. Like a beaver or an otter. It would be an interesting insight into his physiology. Merponies could bask on rocks, but didn’t move very effectively on land, Seaponies and Kelpies were practically helpless out of the water; Sirens were supposed to be amphibious, although she was pretty sure they were a legend. Nopony reliable had reported seeing any in over a millennium. 