Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
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Kim Taylor / Green Hydra (Hydra viridis) walking. Digital Composite showing five movement stages. UK
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Alex Hyde / 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...
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Albert Lleal / Green Hydra (Hydra viridissima) and Flatworm (Girardia tigrina), Spain
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Jan Hamrsky / Freshwater hydra (Hydra viridis) attached to submerged wood, Europe, February, controlled conditions.
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Albert Lleal / Green Hydra (Hydra viridissima) colony
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles retracted. UK, November.
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
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Stephen Dalton / End-on view of Green Hydra (Hydra viridis) showing six tentacles. UK, November.
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Stephen Dalton / Green Hydra (Hydra viridis) using "net" to feed in debris rich water. UK, November.
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Stephen Dalton / Sequence showing different views of Green Hydra (Hydra viridis), a simple animal related to jellyfish (Cnidaria). UK.
