Hoopla Hoodies
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Description: Or is it a hoopla? From Wikipedia: Hydra /ˈhaɪdrə/ is a genus of small, fresh-water animals of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions. Biologists are especially interested in Hydra because of their regenerative ability – they appear not to age or die of old age. A creative collage of PD pictures, including one CC-BY-2.0 one: https://www.flickr.com/photos/tonynetone/25578905181/in/photostream/
