Want better video quality? Sign in to access HD streaming!


Want to watch better-quality PBS Video? Sign in to access HD streaming!

When you sign in, you'll become a PBS Insider and we'll share your contact information with your local PBS station. You may receive updates to help you stay connected with what's happening online and in your community. Privacy Policy


The immortal Hydra

  • Aired: 05/08/2017
  • 06:06
  • Rating: NR
As young children we learn a hard truth. In the end all animals die… or do they? Next up we have the story of an ongoing science experiment and a freshwater animal that just may have found the fountain of youth.
Embed Options
Close ×
The immortal Hydra
The immortal Hydra
An ongoing science experiment that may have found the fountain of youth.
Please copy this text to your clipboard.
Problems Playing Video ?
PBS Anywhere - funder area
Related Links:


Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Masterpiece Collection

Own it now! Victoria, Poldark, Downton Abbey on DVD & Blu-ray. Visit ShopPBS.


WLIW21 helps all of us explore new worlds and ideas. Give Now