Sandworms busy at work on an Arctic tidal flat. Well, not exactly a Dune scene this as these creatures are 1/100 to 1/1000 the size of the fictitious sand worms created and so aptly described by Frank Herbert, author of the Dune sci-fi novels. But the operational principle is pretty similar (in a reduced, down-to-earth context).
Also called Lugworms.
And last but not least, this proves the once drowned D500 now has come back to being fully operational. In lieu of a hair dryer, a towel drying rack can be just the accessory helping to revive a drowned camera.