kelpie \Kel"pie\, n.(Scotch Myth.) An imaginary spirit of the waters,
horselike in form, vulgarly believed to warn, by preternatural noises and lights,
those who are to be drowned. --Jamieson.

...

And now I shall return to deepest cold embrace.
for all time to come, I will haunt this place.
A seahorse in the sand, imprisoned in a dream.
My soul adrift at sea, until you fly to me.
Somehow you can't forget - the one who held so much,
This ghost will sink alone, blue lips without your touch.
Into the depths below, a fall vanquished your love.
And now I know the way, to call you from above.
A creature in the sea, revealed her plans for me.
Ophelian her wings, grown to a large degree,
This siren sang of you, now in the waves I see...
A vision of your face - for all eternity.
Descend to me this day, with final price I pay,
your element awaits, until you come to say:
You're sorry for lost time, and now you see the way...
and with newfound resolve, this time - you're here - to stay.

...

"The Great Below" by NIN
staring at the sea, will she come?
is there hope for me after all is said and done
anything at any price, all of this for you
all the spoils of a wasted life
all of this for you

all the world has closed her eyes
tired faith all worn and thin
for all we could have done
and all that could have been

ocean pulls me close and whispers in my ear
the destiny i've chose all becoming clear
the currents have their say the time is drawing near
washes me away makes me disappear

i descend from grace in arms of undertow
i will take my place in the great below

i can still feel you
even so far away