Hydra /ˈhaɪdrə/ is a genus of small, fresh-water animals of the phylum Cnidaria
and class ... Once fully extended, the tentacles are slowly manoeuvred around
waiting for contact with ...
Dec 22, 2015 ... In ancient Greek myth, the Hydra was a multi-headed monster that grew two more
heads for every one that it lost. As it turns out, the real-life ...
Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum ...
The hydra known to zoologists is a small aquatic animal only about 1.2 inches ...
Mar 8, 2016 ... There's a small, tentacled freshwater animal called a hydra, whose mouth
disappears every time it closes. I really mean that: it disappears.
Mar 1, 2007 ... A live video capture of a Hyrda using the bright field mircoscope technique.
Nov 9, 2007 ... Hydra is a genus of simple, fresh-water animals possessing radial symmetry. ....
Triops cancriformis may therefore be the "oldest living animal ...
Jan 30, 2015 ... Scientists believe that the hydra may be able to eternally resist going ... of less
than half an inch in length, they are marvels of the animal world.
If disturbed, a hydra will contract its body and tentacles, so that it now ... the basal
disc produces a gas bubble which carries the animal up to the water surface.
Dec 26, 2015 ... Is there a creature that can defeat death? Yes, says new research that confirmed
that the tiny hydra – a centimetre-long polyp that inhabits fresh ...
Dec 10, 2013 ... Biologists from the University of Southern Denmark believe the microscopic
animal, Hydra magnipapillata, is almost completely unaffected by ...