Hydra sp
![Image of Knidaria](https://content.eol.org/data/media/dc/53/14/542.b526e4f7c6ac4ba72eaadd36d9059c26.580x360.jpg)
Description:
Hydra has a tubular body up to 10 mm long when extended secured by a simple adhesive foot. At the free end of the body is a mouth opening surrounded by one to twelve thin, mobile tentacles
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- cc-by-nc-sa
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- Marco Spiller
- photographer
- Marco Spiller
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- original media file
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