User blog comment:Cfp3157/Percy Jackson vs. Harry Potter/@comment-4392864-20131102233621/@comment-5078776-20131102235338

JW is right here, he doesn't. He relies on actual liquid water, like in rivers and oceans. His father is the god of the ocean, not water itself. The sole example of this is the petrified shells, and even then they contained some weird mystic  link to the ocean.