Glow in the Dark SQUIDY with Bottle This Cartesian diver wears its own squid costume that glows in the dark. email to friend
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Everything is cooler when it's glow-in-the-dark! Now the popular soda bottle science toy is available in glow-in-the-dark green.

SQUIDY has become a classic science toy! Squeeze the plastic soda bottle and SQUIDY swims up and down in the bottle of water. Children can't help but ask, "How does that work?" The illustrated instructions show how to construct the Cartesian diver and explains the scientific principle behind its action.

Glow-in-the-Dark SQUIDY without Bottle

What's included?

Materials to make the SQUIDY Cartesian diver, plastic bottle with cap and instructions.

How does it work?

Squeeze the soda bottle and SQUIDY swims up and down in the water. The illustrated science activity guide shows how to construct the Cartesian diver and explains the scientific principle behind its action.

What does it teach?

Cartesian divers provide an amazing way to demonstrate and understand the science behind density and buoyancy. Discuss the properties of air and ask your kids to guess why SQUIDY sinks when air is forced into the bottle and floats when they let go.