Freshwater Polyp Hydra sp.
Hydra sp., located at the roots of a willow tree in lotic water. (1)
 
Hydra sp., tentacle with cnidocysts
 
Hydra sp.; part of a tentacle with cnidocysts. Glu: glutinant; Vo: volvent; Pe: penetrant. The arrows point to some of the cnidocils of the penetrants.(2)
 
Hydra sp.; discharged penetrants (2)
 
Hydra sp., discharged volvents
 
Hydra sp., discharged glutinant
 
This nematode came too close to the Hydra (4.3.2007)
 
Nematode with penetrants (4.3.2007)
 
Hydra sp., is very often infested by a ciliate: Trichodina pediculus
 
Trichodina pediculus, an ectoparasite of Hydra
.
Location: Gevelsberg, Stefansbach (1); Nature reserve NSG Heiliges Meer, NRW, Germany, pond: Kleinweiher "Üffings Wiese" (location 16) (2);
Habitat: root of willow tree (Salix sp) (1); plankton with detritus/ algae (2)
Date: 23.06.2006 (1); 16.11.2021 (2)
freshwater life
procaryota
algae
plants
protists
"worms"
molluscs
arthropods
marine life
mediterranean
tropical
misc
impresssum
plingfactory