Drop this little jellyfish in a plastic water bottle and squeeze to make him bob and dance. Also called a Cartesian diver, this is a fun way to explore and learn about pressure and buoyancy.
- Learn about pressure and buoyancy!
- Dives down, floats up, holds still, and spins
- Bottle not included
- NOTE: Available in assorted red and blue colors. Please contact our friendly staff at 1-800-499-8696 for questions about color selection.
- CHOKING HAZARD - Small Parts. Not for Children under 3 years