Elf Of The Rose - Hans Christian Andersen

Far out in the ocean, where the water is as blue as the prettiest cornflower, and as clear as crystal, it is very, very deep; so deep, indeed, that no cable could fathom it: many church steeples, piled one upon another, would not reach from the ground beneath to the surface of the water above. There dwell the Sea King and his subjects.

But these are small troubles, people will say. Yes, but they are drops which wear hollows in the rock.

At first she was overjoyed that he would be with her, but then she recalled that human people could not live under the water, and he could only visit her father's palace as a dead man.