Elmo and Zoe try to figure out how to make Rocco the rock float. Leela helps them experiment with different materials until they design the perfect vessel.
| Creator | Joan Ganz Cooney |
|---|---|
| Actor | Kevin Clash, Caroll Spinney, Frank Oz |
| Country | United States of America, France, Germany, Netherlands, Spain |
| Production | Sesame Workshop |
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