Species Gallery (Hydrozoa)
The links below will open a large version of the image in an overlay
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Aglaophenia kirchenpaueri on a subtidal rock.
Copyright: Paul Newland
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Aquarium photograph of colonies with gonothecae.
Copyright: Dr Keith Hiscock
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Illuminated image of Clava multicornis.
Copyright: Joint Nature Conservation Committee (JNCC)
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Underwater, close-up of Cordylophora caspia.
Copyright: Dr Keith Hiscock
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Cordylophora caspia colony present under an overhang.
Copyright: Dr Keith Hiscock
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Close-up of Cordylophora caspia.
Copyright: Dr Keith Hiscock
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Corymorpha nutans specimen, approximately 1 cm height.
Copyright: Dr Hilmar Hinz
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Corymorpha nutans on shelly sand.
Copyright: Fiona Crouch
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The sea-fir Dynamena pumila attached to an intertidal fucoid.
Copyright: David Fenwick Snr.
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Clumps of Dynamena pumila growing amongst holdfasts.
Copyright: Dr Keith Hiscock
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The sea-fir Dynamena pumila attached to an intertidal fucoid.
Copyright: David Fenwick Snr.
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Gymnangium montagui.
Copyright: Paul Newland
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Gymnangium montagui at St. James Stone, Lundy.
Copyright: Dr Keith Hiscock
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Gymnangium montagui.
Copyright: Dr Keith Hiscock
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Gymnangium montagui at Firestone.
Copyright: Dr Keith Hiscock
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Gymnangium montagui at Hand Deeps sideways view.
Copyright: Dr Keith Hiscock
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Gymnangium montagui at Hand Deeps.
Copyright: Dr Keith Hiscock
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Close up view of Gymnangium montagui at an aquarium.
Copyright: Dr Keith Hiscock
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Plumes of Gymnangium montagui
Copyright: Sue Daly
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Sea fir Halicium halecinum and feather star Antedon bifida.
Copyright: Dr Keith Hiscock
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Halecium halecinum at Firestone, Plymouth.
Copyright: Dr Keith Hiscock
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Halecium halecinum at Mewstone, Plymouth.
Copyright: Dr Keith Hiscock
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Close up of large branching Hartlaubella gelatinosa.
Copyright: Dr Keith Hiscock
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Hydractinia echinata on the carapace of a hermit crab.
Copyright: Dr Keith Hiscock
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Hermit crab with Hydractinia echinata growth on its shell.
Copyright: Paul Newland
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The plumose hydroid Kirchenpaueria pinnata.
Copyright: Dr Keith Hiscock
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Kirchenpaueria pinnata on muddy sand.
Copyright: Fiona Crouch
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An attached hydroid found in a littoral rockpool.
Copyright: David Fenwick Snr.
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An attached hydroid found in a littoral rockpool.
Copyright: David Fenwick Snr.
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Laomedea angulata on seagrass.
Copyright: Dr Keith Hiscock
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Nemertesia antennina
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_pnewland20090407_1.jpg)
Nemertesia antennina
Copyright: Paul Newland
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Nemertesia antennina at Mewstone, Plymouth.
Copyright: Paul Newland
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Nemertesia antennina close up.
Copyright: Paul Newland
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Colony with feeding nudibranchs.
Copyright: Dr Keith Hiscock
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Nemertesia ramosa hydroid colonies at the Runnelstone, Cornwall
Copyright: Paul Newland
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Nemertesia ramosa colony.
Copyright: Paul Newland
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Nemertesia ramosa.
Copyright: Dr Keith Hiscock
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Obelia dichotoma on side of rock.
Copyright: Scottish Natural Heritage (SNH)
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Pachycordyle michaeli on Ruppia, Goesse Meer, The Netherlands.
Copyright: Marco Faasse
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Line drawing of Pachycordyle michaeli.
Copyright: Dr R.S.K. Barnes
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Floating pneumatophore of a live colony of Physalia physalis.
Copyright: Dr Keith Hiscock
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Dead remains of Physalia physalis washed up on a beach.
Copyright: Dr Keith Hiscock
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The glassy plume hydroid Plumularia setacea
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_KHiscock_Plumularia_setacea_on_Nantennina_Firestone_2021-11-03.jpg)
Plumularia setacea with gonothecae
Copyright: Dr Keith Hiscock
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The bottlebrush hydroid Thuiaria thuja.
Copyright: Chris Wood
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Thuiaria thuja on rocky substrate.
Copyright: Fiona Crouch
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The bottlebrush hydroid Thuiaria thuja on rock.
Copyright: Joint Nature Conservation Committee (JNCC)
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Group of Tubularia indivisa on rock, St Kilda.
Copyright: Sue Scott
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Tubularia indivisa bearing reproductive bodies in Lyme Bay, Devon.
Copyright: Robert Keen
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Tubularia indivisa experiencing relatively strong currents.
Copyright: Paul Newland
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Tubularia indivisa heads over a dark background.
Copyright: Dr Keith Hiscock
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Tubularia indivisa patch at Firestone.
Copyright: Dr Keith Hiscock
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Oaten pipes hydroid.
Copyright: Dr Keith Hiscock
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Tatty looking Tubularia indivisa individuals.
Copyright: Fiona Crouch
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Velella velella being washed ashore.
Copyright: Dr Keith Hiscock
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Velella velella stranded on a sandy shore.
Copyright: Dr Keith Hiscock
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Velella velella stranded on the shore.
Copyright: Dr Keith Hiscock
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Velella velella washed ashore.
Copyright: Dr Keith Hiscock
Images: 59