Titans of the Water

Creations of Marestes Ocean-Born, the Titans of water were salt-veined by nature, and many of them were as transient as a wave, ever dying and reborn, much in the manner of the titans of fire. Children of the God of the South, they were at home in the great ocean which surrounded Aiaor. Maelstroms and waterspouts and surging tides were the forms taken by these minor titans.
The high titans of the water were the Icecutters. In the absence of any axial tilt, Aiaos has no ice floes, no glaciers. It was the Icecutters' work to cool the World as the forges of the sky cities heated it. The snow and ice of Aiaos are all the work of the Icecutters in aeons past. There are those scholars who believe that the snow and ice of the world are retreating in the face of increasing industrialisation, and that with nothing to replace them, the world will ultimately die in fire.
Of all the titans, those of the water had the highest survival rate during the war. The Icecutters fell with the other residents of Titanis, but the Colossi made little impact on the ocean, neglecting it as most surface dwellers do, or at least leaving it to the mercy of the aboleth and their scions, which as terrible as they were were little threat to a titon.
Time has been crueller. The frost Giants still do all they can to tend the great ice wells, but as Aiaos warms, the currents slow and transient titans fade. Only a few of the great oceanics survive, the greatest of all the Maelstrom at the heart of the Central Sea. Beneath the waters, a handful of the oldest kraken are great enough to still bear the name of titan. Oldest and deepest of all swims Leviathan, the ur-Kraken, more ancient than any other living thing, save perhaps for the Phoenix, and the Terrasek.