• Results for
    • Hydra
  • (90)
Green Hydra (Hydra viridis) with tentacles extended. UK, November.  -  Stephen Dalton
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
Green Hydra (Hydra viridis) with tentacles extended. UK, November.  -  Stephen Dalton
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Green Hydra (Hydra viridis) walking. Digital Composite showing five movement stages. UK  -  Kim Taylor
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Kim Taylor / 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  -  Heather Angel
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Heather Angel / Freshwater green hydra (Hydra viridissima) moving over a petri dish. Green colour comes from the symbiotic relationship with green alga Chlorella vulgaris
River water-crowfoot (Ranunculus fluitans), with Hydra (Hydra sp), attached. River Aare, Berne, Switzerland, October. Photographed for The Freshwater Project.  -  Michel Roggo
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Michel Roggo / River water-crowfoot (Ranunculus fluitans), with Hydra (Hydra sp), attached. River Aare, Berne, Switzerland, October. Photographed for The Freshwater Project.
River water-crowfoot (Ranunculus fluitans), with Hydra (Hydra sp), attached, the Aare river.  Brügg, Canton of Berne, Switzerland.October.  Photographed for The Freshwater Project.  -  Michel Roggo
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Michel Roggo / River water-crowfoot (Ranunculus fluitans), with Hydra (Hydra sp), attached, the Aare river. Brügg, Canton of Berne, Switzerland.October. Photographed for The Freshwater Project.
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...  -  Alex  Hyde
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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...
Freshwater hydra (Hydra viridis) attached to submerged wood, Europe, February, controlled conditions.  -  Jan  Hamrsky
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Jan Hamrsky / Freshwater hydra (Hydra viridis) attached to submerged wood, Europe, February, controlled conditions.
Free-living caddisfly larva (Rhyacophilidae) exploring small hydra, Europe, July, controlled conditions  -  Jan  Hamrsky
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Jan Hamrsky / Free-living caddisfly larva (Rhyacophilidae) exploring small hydra, Europe, July, controlled conditions
Brown hydra (Hydra oligactis) polyps attached to the stone, Europe, September, controlled conditions  -  Jan  Hamrsky
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Jan Hamrsky / Brown hydra (Hydra oligactis) polyps attached to the stone, Europe, September, controlled conditions
Brown hydra (Hydra oligactis) digesting the prey enclosed within the body cavity, Europe, September, controlled conditions  -  Jan  Hamrsky
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Jan Hamrsky / Brown hydra (Hydra oligactis) digesting the prey enclosed within the body cavity, Europe, September, controlled conditions
Brown hydra (Hydra oligactis) with two buds on the body wall, extending its tentacles,  Europe, September, controlled conditions  -  Jan  Hamrsky
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Jan Hamrsky / Brown hydra (Hydra oligactis) with two buds on the body wall, extending its tentacles, Europe, September, controlled conditions
Fly fisherman (Murray Trowbridge) hooking a large brown trout (Salmo trutta) on the spring fed Hydra Waters, North Canterbury, South Island, New Zealand, November, 2003. Model released.  -  Andy Trowbridge
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Andy Trowbridge / Fly fisherman (Murray Trowbridge) hooking a large brown trout (Salmo trutta) on the spring fed Hydra Waters, North Canterbury, South Island, New Zealand, November, 2003. Model released.
Hydroid colonie (Sarsia tubulosa), Atlantic Ocean,  North West Norway  -  Solvin Zankl
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Solvin Zankl / Hydroid colonie (Sarsia tubulosa), Atlantic Ocean, North West Norway
Green Hydra (Hydra viridis) with tentacles retracted. UK, November.  -  Stephen Dalton
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles retracted. UK, November.
Green Hydra (Hydra viridis) with tentacles extended. UK, November.  -  Stephen Dalton
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Stephen Dalton / Green Hydra (Hydra viridis) with tentacles extended. UK, November.
End-on view of Green Hydra (Hydra viridis) showing six tentacles. UK, November.  -  Stephen Dalton
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Stephen Dalton / End-on view of Green Hydra (Hydra viridis) showing six tentacles. UK, November.
Green Hydra (Hydra viridis) using "net" to feed in debris rich water. UK, November.  -  Stephen Dalton
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Stephen Dalton / Green Hydra (Hydra viridis) using "net" to feed in debris rich water. UK, November.
Sequence showing different views of Green Hydra (Hydra viridis), a simple animal related to jellyfish (Cnidaria). UK.  -  Stephen Dalton
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Stephen Dalton / Sequence showing different views of Green Hydra (Hydra viridis), a simple animal related to jellyfish (Cnidaria). UK.
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean  -  David Shale
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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
Deepsea Hydro-medusa from mid atlantic ridge, North Atlantic ocean  -  David Shale
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David Shale / Deepsea Hydro-medusa from mid atlantic ridge, North Atlantic ocean
Hydroids growing on coral reef, Great Barrier Reef, Australia  -  Jurgen Freund
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Jurgen Freund / Hydroids growing on coral reef, Great Barrier Reef, Australia
Deepsea marine hydroid, Atlantic ocean  -  Solvin Zankl
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Solvin Zankl / Deepsea marine hydroid, Atlantic ocean
SY "Adele"'s digital air and sea temperature guage showing below freezing whilst exploring the Antarctic Peninsula, January 2007.  -  Rick Tomlinson
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Rick Tomlinson / SY "Adele"'s digital air and sea temperature guage showing below freezing whilst exploring the Antarctic Peninsula, January 2007.
Water, air and sea temperatures onboard SY "Adele", 180 foot Hoek Design, during her expedition around the Antarctic Penninsula, January 2007.  -  Rick Tomlinson
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Rick Tomlinson / Water, air and sea temperatures onboard SY "Adele", 180 foot Hoek Design, during her expedition around the Antarctic Penninsula, January 2007.
Digital barometer onboard SY "Adele" showing the air and sea temperature whilst sailing in French Polynesia, 2006.  -  Rick Tomlinson
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Rick Tomlinson / Digital barometer onboard SY "Adele" showing the air and sea temperature whilst sailing in French Polynesia, 2006.
Underwater Brown hydra (Hydra oligactis) on water plant, Lake Naarden, Holland  -  Willem Kolvoort
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Willem Kolvoort / Underwater Brown hydra (Hydra oligactis) on water plant, Lake Naarden, Holland
Underwater Brown hydra (Hydra oligactis) in sand winning pit, Holland  -  Willem Kolvoort
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Willem Kolvoort / Underwater Brown hydra (Hydra oligactis) in sand winning pit, Holland
Brown hydra on plants (Hydra fusca) Lake Naarden, Holland  -  Willem Kolvoort
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Willem Kolvoort / Brown hydra on plants (Hydra fusca) Lake Naarden, Holland
Brown Hydra (Pelmatohydra / Hydra oligactis) Holland  -  Willem Kolvoort
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Willem Kolvoort / Brown Hydra (Pelmatohydra / Hydra oligactis) Holland
Common Hydra (Hydra vulgaris) on Canadian waterweed (Elodea sp) Holland  -  Willem Kolvoort
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Willem Kolvoort / Common Hydra (Hydra vulgaris) on Canadian waterweed (Elodea sp) Holland
Common Hydra (Hydra vulgaris) on Rigid hornwort Lake Naarden, Holland  -  Willem Kolvoort
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Willem Kolvoort / Common Hydra (Hydra vulgaris) on Rigid hornwort Lake Naarden, Holland
Common hydra (Hydra vulgaris) on a young leaf of White water lily, Lake Naarden, Holland  -  Willem Kolvoort
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Willem Kolvoort / Common hydra (Hydra vulgaris) on a young leaf of White water lily, Lake Naarden, Holland
Common hydra (Hydra vulgaris) attached to underwater leaf, Lake Naarden, Holland  -  Willem Kolvoort
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Willem Kolvoort / Common hydra (Hydra vulgaris) attached to underwater leaf, Lake Naarden, Holland
Green hydra {Hydra viridissima} budding. UK.  -  Kim Taylor
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Kim Taylor / Green hydra {Hydra viridissima} budding. UK.
Common hydra {Hydra vulgaris} budding. UK.  -  Kim Taylor
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Kim Taylor / Common hydra {Hydra vulgaris} budding. UK.
Common hydra {Hydra vulgaris} capturing a water flea {Daphnia sp.}. UK.  -  Kim Taylor
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Kim Taylor / Common hydra {Hydra vulgaris} capturing a water flea {Daphnia sp.}. UK.
Obelia hydra {Coelenterata hydrozoa} first polypop colony  -  Kim Taylor
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Kim Taylor / Obelia hydra {Coelenterata hydrozoa} first polypop colony
Green hydra {Hydra viridissima} budding. UK.  -  Kim Taylor
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Kim Taylor / Green hydra {Hydra viridissima} budding. UK.
Common hydra {Hydra vulgaris} rejecting Mayfly larva (x3) UK.  -  Kim Taylor
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Kim Taylor / Common hydra {Hydra vulgaris} rejecting Mayfly larva (x3) UK.
Common hydra {Hydra vulgaris} on Bladderwort. UK.  -  Kim Taylor
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Kim Taylor / Common hydra {Hydra vulgaris} on Bladderwort. UK.
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