She looks similar to Squidward's temporary pet, Snellie, in the episode "The Great Snail Race," as well as Mary from "Gary in Love." She has light blue and light green skin and a lavender shell. Her shell also has a dark purple swirl along with a pink bow. She has dark blue eyes and eyelashes.
Mrs. Puff's snail is seen stuck high in a tree somewhere in Bikini Bottom and is seen to be close to falling until SpongeBob rescues her. It's mentioned to have been adopted by Mrs. Puff since she was a little girl.