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Hydra sp.


I took this picture at home where the Hydra (5 mm) was attached to the glass of my aquarium. The hydra originated from a canal close to the city of Utrecht (The Netherlands)


From Wikipedia: Hydra (pron.: /ˈhaɪdrə/) is a genus of small simple fresh-water animals possessing radial symmetry. Hydra are predatory animals belonging to the phylum Cnidaria and the class Hydrozoa. They can be found in most unpolluted fresh-water ponds, lakes, and streams in the temperate and tropical regions and can be found by gently sweeping a collecting net through weedy areas. They are multicellular organisms which are usually a few millimetres long and are best studied with a microscope. Biologists are especially interested in Hydra due to their regenerative ability; and that they appear not to age or to die of old age.

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SandraPereira 11 years ago

Cool ...

LaurenZarate 11 years ago

Really neat spot!

JamieHarrison 11 years ago

Wow! That is so beautiful! Where was it taken?

Mark Ridgway
Mark Ridgway 11 years ago

Super spotting.

Gerardo Aizpuru
Gerardo Aizpuru 11 years ago

Fantastic spot :)

Peter S.
Peter S. 11 years ago

Thanks for all for the nice comments! What honor to feature as fun fact on Facebook... For those who like the read more on the 'immortality' of hydra might want to read the sources denoted on wikipedia

Dixie 11 years ago


Great capture Peter,congrats on the Fun Fact of Facebook on the Day( FFFD) :-) thanks for sharing

Reza Hashemizadeh
Reza Hashemizadeh 11 years ago

Fantastic !

Telse 11 years ago


rutasandinas 11 years ago


KarenL 11 years ago

Thank you for sharing this fascinating spotting Peter, which we are featuring as a fun fact on Facebook today!

The hydra (a tiny relative of the jellyfish) is the only organism scientists have identified that never ages and is biologically immortal. How cool is that!

ChunXingWong 11 years ago

Magnificent Spotting!
Hydra spottings are quite rare on Project Noah.

Ali Hemati Pour
Ali Hemati Pour 11 years ago

Very Beautiful!

nxmatesanz 11 years ago

Very cool. Where/ how was the shot taken?

drP 11 years ago

Beautiful picture, and I love hydras!

Peter S.
Spotted by
Peter S.

Utrecht, Netherlands

Spotted on Feb 28, 2012
Submitted on Feb 19, 2013

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