Hydra Viridis Collection

Green hydra (Hydra viridissima) found in a garden pond. Derbyshire, UK. September. Winner of the Hidden Britain Category of the British Wildlife Photographer of the Year Awards (BWPA) Competition 2017

Green Hydra (Hydra viridis) walking. Digital Composite showing five movement stages. UK

Freshwater green hydra (Hydra viridissima) moving over a petri dish. Green colour comes from the symbiotic relationship with green alga Chlorella vulgaris

Hydra budding C014 / 4856
Hydra budding. Coloured scanning electron micrograph (SEM) of a Hydra viridis freshwater hydrozoan. Hydra viridis commonly reproduces by budding, as seen here

Green hydra, light micrograph C014 / 4680
Green hydra. Darkfield illuminated light micrograph of the tentacled head of a green hydra (Hydra viridis). Hydra are small simple predatory fresh-water animals, belonging to the phylum Cnidaria

Green hydra, light micrograph C014 / 4681
Green hydra. Darkfield illuminated light micrograph of a green hydra (Hydra viridis), showing its tentacled head. Hydra are small simple predatory fresh-water animals

Green hydra, light micrograph C014 / 4678
Green hydra. Light micrograph of the tentacled head of a green hydra (Hydra viridis). Hydra are small simple predatory fresh-water animals, belonging to the phylum Cnidaria

Green hydra, light micrograph C014 / 4679
Green hydra. Darkfield illuminated light micrograph of a green hydra (Hydra viridis), showing its tentacled head. Hydra are small simple predatory fresh-water animals

Hydra - testes and eggs
RD-292 Hydra - testes and eggs Hydra viridis Giacomo Radi contact details: prints@ardea.com tel: +44 (0) 20 8318 1401

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