Molch

There may lie all the horrors that Schiller's diver encountered -- the frightful Molch, and that worst of all, to which he gives no name, which came creeping with a hundred knots at once; but here are only the gracious rainbow-woven shells, an evanescent jelly or two, and the queer baby-crabs that crawl out from the holes of the bordering rocks.

The Seaboard Parish Volume 3 George MacDonald 1864

There may lie all the horrors that Schiller's diver encountered -- the frightful Molch, and that worst of all, to which he gives no name, which came creeping with a hundred knots at once; but here are only the gracious rainbow-woven shells, an evanescent jelly or two, and the queer baby-crabs that crawl out from the holes of the bordering rocks.

The Seaboard Parish, Complete George MacDonald 1864