Author's Note: Yes, I know that Gandalf created the water horses in the book and Arwen did so in the movie, but I like thinking of them as creatures of sorts, or at least spirits or something. 

Also, if anyone who reads this knows Elvish (or knows someone who knows Elvish) would like to convert this (or as close to this as possible) to Elvish, I would really like to see it. 

We are the water horses

The steeds of the Bruinen

Called, we come

Galloping in crashing waves

Fluid and strong are we

Made with liquid jewels

Droplets of diamonds and sapphires

Flowing over the river

Glory is in our raging song

Pride in our roaring cry

We are the water horses

The steeds of the Bruinen

Called, we come

Charging down the Dark

Washing clean our banks

Drowning out their cries

Our thunderous rush triumphant

For we are the proud, the strong, the free

We are frothing manes, swirling bodies

The steeds of the Bruinen