Hydra Inquiry

This hydra is related to jellyfish and anemones and was collected from a pond in Flagstaff, Arizona.


  • What advantage for the hydra is its tubular shape and tubular tentacles?
  • How does this organism's shape and use of its tubular tentacles compare to other organisms?
  • Can you find any cycles in the video? How do these cycles compare to other cycles you know about?
  • What else can you find out about this critter?



Hydra was a nine-headed serpent from Greek mythology.

©2010 by Jeffrey W. Bloom


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