The water is Shinryu's Tidal Wave attack in FFV. Whether or not it was even actually there, or floating above Gyr Abania, or what is up for interpretation.
He's also not a Doman deity. He just so happens to kinda resemble a creature from Doman legend so they just called him that for convenience because the shinobi were calling him that. He's a dragon because Ilberd wanted something like Bahamut, not because he drew from the same legends the Domans were thinking of.
He's also not a Doman deity. He just so happens to kinda resemble a creature from Doman legend so they just called him that for convenience because the shinobi were calling him that. He's a dragon because Ilberd wanted something like Bahamut, not because he drew from the same legends the Domans were thinking of.