The Moon and the Tide

While the other gods went about making the world, Umos turned his eyes to the night sky. He placed each star in its place and is said to have left many mysteries within them. But the stars were not the only things he placed in the heavens.
When Umos finished placing the stars in the sky he looked over his work and saw it missed something, for the stars were dazzling, but the night was dark and foreboding and few wished to enter out into it. That was when it hit him. The day had the sun to light the world and bring warmth, the night needed something akin to it. A source of light bright enough keep the strangling darkness at bay but dim enough to allow his canvas to be seen. Deep in the depths of the oceans Lautan ruled his domain and among his greatest treasures was an enormous pearl so wondrous that it glowed with a light that illuminated his home, but the light never made it to the surface, constricted by the immense depths.
Umos traveled to Lautan's domain and asked for the treasure to hang in the sky that all might see its beauty, but the god of the sea refused for it was a treasure of his domain and he feared its destruction should it leave his waters. So, Umos tricked Lautan and stole away with the orb, hanging it high in the sky for all to see. Lautan was enraged by this and in his fury he made the waters of the world swell and rise swallowing the land, rising to reclaim his lost treasure.
The gods made many attempts to calm or restrain the angered god, but none, not even his brother Envau could restrain the raging divine. None until Merav. The Rose Ever-blooming's voice rang out beneath the waves and soothed Lautan. Merav and Lautan, both divines driven by passion and emotion, grew to love one another and from their love was born a multitude of beautiful water-bound lifeforms, the greatest of which are the whales that have inherited their father's strength and endurance and their mother's voice. The song of his children keeps Lautan calm when his lover is away.
But this did not halt his abhorrence for Umos nor his desire to reclaim his prized possession. His intent shows at night when the moon is high, the waters of the world rise to meet it in defiance of the god that took it and as a reminder of what he was truly willing to do to reclaim it.