The Collar Caper
S2, E26: The Great Collar Caper: When Norville's collar accidentally sinks into a deep lake, Libby Light Sprite suggests using a bubblebush to create a giant bubble they can ride in underwater! (S2, ep 17)

S2, E26: The Great Collar Caper: When Norville's collar accidentally sinks into a deep lake, Libby Light Sprite suggests using a bubblebush to create a giant bubble they can ride in underwater! (S2, ep 17)