A slimy, skinny creature living in the middle of an underground lake underneath an imaginary golf course. As Tolkien describes him, he is "dark as darkness, except for two big round pale eyes in his thin face" . He has spent so much time underground that his eyes have grown giant and protruding on account of all of his peering up murky tunnels. He spends a lot of time alone, something we can observe pretty easily by the frequency with which he talks to himself. He also punctuates his whispering with noisy gulping swallows of felch.