Ḳupilġuḳaluk

The Ḳupilġuḳaluk (also known as the Giant Ice Wurm) is an extinct race of macrofauna native to the Frost. While little is known of the Ḳupilġuḳaluk and the reasons for its extinction, some Mindsong researchers propose a link between the Shards and the Wurms. The Wurmways beneath Frostfall are the most extensive known network of Wurm-burrows, and after the Auksalaḳ, may in fact be the last in existence.

Aḳulliḳ (the Last One)
Aḳulliḳ is the only known skeleton of the Ḳupilġuḳaluk. The spine measures at 421m and has been completely glacified. Some proponents of the One Wurm Theory think that Aḳulliḳ is in fact the only wurm to have lived in Frostfall, and the Wurmways are a direct result of all its movements.