Watcher in the Water

The Watcher in the Water is a fictional creature in J. R. R. Tolkien's Middle-earth legendarium; it appears in The Fellowship of the Ring, the first volume of The Lord of the Rings. Lurking in a lake beneath the western walls of the dwarf-realm Moria, it is said to have appeared after the damming of the river Sirannon, and was first recorded by Balin's dwarf company 30 or so years before the beginning of Fellowship of the Ring. The origins of the creature are not described in Tolkien's works, but writers have compared it to squids, the legendary kraken, and even to Tolkien's dragons.