Star Serpent
From Tardis Wiki, the free Doctor Who reference
Star Serpents are found in cold empty spacelands between distant galaxies and usually eat nothing but stray neutrinos floating in the vacuum. Serpent is misleading as these giant space worms appear to have very basic living functions.
One was once known to swallow the TARDIS with the Doctor, Amy Pond and Rory Willaims still aboard. (DWA: The Star Serpent)
