Ok so I wasn't going to get through The Inheratance Trilogy without designing some godlings of my own. I've tried to keep them in line with canon and the way in which gods/godlings work therin. These here are three major godlings of the ocean (who form a minor triad, because nature likes triads... and yes of COURSE it's ocean themed), in order from eldest to youngest;
The Plates "Ka" - With dominion over the tectonic plates their dual aspect comes from the differences seen in land and sea plates. Child of Enefa and Itempas. Has many godling children of earth, fire, and stone.
The Current "Ouro" - Dominion over currents both in water and air. Child of Nahadoth and Itempas. Parent of the Tides with Nahadoth.
The Chain "Persnā" - Dominion over life's dependence on the ocean (frequently misunderstood as a godling of the 'food chain' but it is far more complex than that - if anything their dominion is interdependence.) They take many, many forms. Child of Itempas and Enefa. No children.
These three godlings are all fairly old and constitute some of the most major of forces of the ocean and have interesting stories of their own - they all three survived the God's war and make their own way at present. They frequently collude with each other when something is troubling one of them. They are often seen with two other godlings known as The Storm and The Deep.
One more under the cut:
And here is Oruo's beloved child - The Tides or "Rahab" - An ephemeral creature with dominions over tides and as flighty as all children of the three and a godling can be. (I'm building this off of a godling that is only hand-wavingly alluded to in text.)