Instructions

1. Fit both funnels into the ends of the rubber tubing.

2. Stretch the balloon over the end of one funnel - make sure it's tight across the funnel

3. Place the funnel with the balloon into the water.

4. Place the other funnel over your ear - can you hear sounds from underwater?

5. Have a friend talk to you underwater - can you hear them clearly?

You will need:

- 2 Plastic Funnels

- Rubber tubing to fit the funnel

- 1 Balloon

- A friend in a pool!