What You Need
- Bowl of ice water
- Paper towels
Place your bare hand into the ice water. Count how many seconds you can leave your hand in until it gets too cold.
Write it down.
Wait for your hand to warm up. Cover one finger with a thick layer of shortening. This is like the layer of blubber harp seals have.
Place your shortening-covered finger in the ice water.
Count how many seconds you can leave your finger in until it gets too cold. Did it work? Were you able to keep your finger in the cold water longer with the shortening?