Polar Worms
The Polar Worms are mythical creatures from Inuit myth. They’re described as long serpentine creatures. They have dragon-like heads and are considered to be extremely vicious.
Citations:
Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.
Zell-Ravenheart, Oberon, and DeKirk, Ashley. Dragonlore: From the Archives of the Grey School of Wizardry. United States, Red Wheel Weiser, 2006.