Sorry, guys. I’m on a Lost Tales and Silmarillion kick at the moment.
So when the Elder Children of Ilúvatar awoke in Cuiviénen, we are told that Oromë, on one of his hunts, was the first of the Valar to discover them. We are then told, of course, that Melkor was really the first to discover them, and set forth immediately to corrupt, frighten, and enslave them, leading to some being captured and tortured, and eventually turned into Orcs.
So, given that Cuiviénen was located on the shores of the Sea of Helcar, and that “many waters flowed thither from heights in the east”, and even that the first sound that the Elves heard when they awoke was the sound of water flowing over stone, why wasn’t Ulmo the first of the Valar to be aware of them?
After all, it was said that wherever water flowed, Ulmo had awareness - from the oceans to the rivers, to small springs, and even in the deep waters flowing under the realm of Melkor.
So what gives? Did Eru hide their existence from him (and for that matter, the delving of Utumno, of which the Valar were not aware), so that Oromë could be the first to find them? Why? Or did he drop the ball? OR, was he, in fact, the first to find the Elves after all, and simply said nothing, because he always was in favor of the Elves being free, never coming to Valinor?
PS: While we’re on the subject of Arda’s theology, I wonder if the Elves who were corrupted and became Orcs are still essentially immortal, being reborn into their children…