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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David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean
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Kim Taylor / Green Hydra (Hydra viridis) walking. Digital Composite showing five movement stages. UK
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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.
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Solvin Zankl / Hydroid colonie (Sarsia tubulosa), Atlantic Ocean, North West Norway
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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.
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Rick Tomlinson / Digital barometer onboard SY "Adele" showing the air and sea temperature whilst sailing in French Polynesia, 2006.
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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.
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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.
