The idea of crossing the river presented him with a unique challenge. He couldn’t just walk across as that would raise too many questions regarding his lineage. Swimming was out of the question, because even with his extraordinary abilities he had never learned how to swim. Finally, he settled for hopping from one rock to the next until he made it across. He figured that since people would be busy laughing, no one would notice if sometimes his foot was partially on the water and partially on a rock. That way, there was no risk of falling in and drowning.