Classification: Subterranean Sandworm
Description: The great American graboid continues to capture our imaginations, as well as our ankles -- dragging us into its gaping, beaked maw with three tentacle-like appendages. Sometimes they leave the head. Fortunately, their dependence on loose desert soil and large prey drastically restricts their habitat.
Further Study: How 'Tremors' Graboids Work by Robert Lamb