An online educational resource dedicated to the photography of
terrestrial wildlife and their habitats, found across South-West
England and the Devon and Cornwall Peninsula by David Fenwick.

Freshwater Hydroids - Hydrozoa (Hydrozoa Images)
Hydrozoa (Class) > Hydroidolina (Subclass) > Anthoathecata (Order) > Aplanulata (Suborder) > Hydridae (Family)

Hydra oligactis Pallas, 1766 - Brown Hydra
Hydra viridissima Pallas, 1766
syn. Chlorohydra viridissima - Green Hydra

Freshwater Hydrozoa Hydroids Hydra UK