The Sea and the Sky

Part of this was in the story I am writing, Moment of Truth. But I liked it so much I decided to complete it a little more.

Does the Sky spill into the Sea? Or is the Sea the Sky?
I guess we will never know until we sail to the ends of the earth to find where they meet.
Until then, if the sky and the sea really are the same, we are somewhere in the middle.

Just so you know, this is a real place; it's Salar de Uyuni, the largest salt flat in the world.