The Magical Under Sea Lair (or M.U.S.L. for short) is the The Inventor's base of operations where he makes many of his "inventions". K'nuckles & Flapjack at first thought it to be either the clam or the body part. The M.U.S.L. is where Whoosh and The Inventor live and where The Inventor's Boys lived. Despite the small size that is first seen, the inside proves otherwhise. Inside there are many things that were "invented" by the Inventor. Most of the "inventions" contained inside the base are mostly made of objects that are powered by The Inventor's Boys, instead of how he advertises his inventions.