SQUIDY has become a classic science toy! This version of the Cartesian diver is cleverly disguised as a colorful squid affectionately called SQUIDY. 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 explain the scientific principle behind its action. Recommended for children ages 6 and up.

Squidy with bottle and cap

What's included?

• Materials to make the SQUIDY Cartesian diver 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.

Experiment:

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.

Product FAQ

• What size bottle can I put it in?
  You can use any size bottle to take the Squidy swimming but 1 liter bottles are the easiest to hold on to.
• What colors does the squidy come in?
  The original squidy has a red body with green tentacles.  There is also the option to make it all glow in the dark, in which case that squidy has a florescent color to it.