[@Jasper19] 

Water Solidification: Percy can harden water into an almost solid shape. He can use this power to walk on water, by increasing the surface tension of the water to the point where it is solid enough for him to stand on, and water constructs. So far, he has demonstrated creating a strong water shield, and on two instances in The Son of Neptune, he hardened the water into giant hands that followed and imitated the movements of his own hands.