She has a grayish-white body with tentacles serving as arms and legs. She also has fur around her neck, fin-like ears, sharp teeth, and yellow eyes. Unlike other monsters shown in the series, she is animated with stop-motion animation.
Role in episode
Mr. Krabs has mentioned that he once encountered the abominable snow mollusk in his past and that he and his crew were eaten by the creature. They had to "wait for nature to take its course" in order to escape her stomach.
When SpongeBob and the gang escape the abominable snow mollusk, she gets a taste of Patrick's last gummy worm. It is then that the monster earns a craving for sweets.
When the gang encounters the monster again, she eats the jelly beans in Patrick's pocket. She then eats Plankton, thinking he is a jelly bean.
She is the third creature to be attracted to Patrick because of food. The first is Gary in "Dumped" (because of a cookie in Patrick's pocket), and the second is a lion fish in "Spongicus" (because of blood sausages hanging from Patrick's neck).
Her name is a parody of the abominable snow monster, a character from Rudolph the Red Nosed Reindeer, as well as an alternate denomination for the cryptid known as the Yeti.
The abominable snow mollusk marks the second appearance of a stop-motion animated character in the SpongeBob SquarePants franchise, the first being SpongeBob in the intro to "Truth or Square."