Olga Kamenskaya / Thallus of filamentous algae (Spiragira and Ulothrix) under Ice, Lake Baikal, Siberia, Russia.
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Olga Kamenskaya / Algae (Spirogyra) on the remains of the dock, Lake Baikal, Siberia, Russia.
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Olga Kamenskaya / Freshwater isopod (Acanthogammarus lappaceus) on a mat of filamentous algae (Spirogyra and Ulothrix) Lake Baikal, Siberia, Russia. October.
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Olga Kamenskaya / Algae (Spirogyra) which has grown suddenly, Baikal Lake, which suggests human pollution may be to blame , Lake Baikal, Siberia, Russia.
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Olga Kamenskaya / Thallus of filamentous algae (Spirogyra and Ulothrix) , Lake Baikal, Siberia, Russia.
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Olga Kamenskaya / Thallus of filamentous algae (Spirogyra and Ulothrix) , Lake Baikal, Siberia, Russia.
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Olga Kamenskaya / Thallus of filamentous algae (Spirogyra and Ulothrix) , Lake Baikal, Siberia, Russia.
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Cyril Ruoso / Algae (Spirogyra) seen from underwater, Conboy Lake National Wildlife Refuge, Washington USA. March.
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Olga Kamenskaya / Tire covered by filamentous algae (Spirogyra), Lake Baikal, Siberia, Russia. September.
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Willem Kolvoort / Ditch with Chara algae (Chara sp), North Holland. May.
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Adrian Davies / Blanket weed (Spirogyra adnate) Slapton Ley National Nature Reserve, Devon, England, UK, July.
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Nick Upton / Delicate stonewort (Chara virgata) on the left without sporangia and on the right with sporangia. Red (male) antheridia and brown, flask shaped (female) archegonia, Marlborough Downs, Wiltshire, UK, S...
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Nick Upton / Delicate stonewort (Chara virgata) on the left without sporangia and on the right with sporangia. Red (male) antheridia and brown, flask shaped (female) archegonia, Marlborough Downs, Wiltshire, UK, S...
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Nick Upton / Duck Leech (Theromyzon tessulatum) waiting and ready to crawl up the nostrils of a duck to suck blood from its respiratory tracts, reaching out from a Delicate stonewort (Chara virgata) alga in a shal...
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Kim Taylor / RF- Filamentous Green algae (Spirogyra sp). (This image may be licensed either as rights managed or royalty free.)
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Will Watson / Eutrophic ditch with bank erosion caused by cattle, with Spirogyra and Enteromorpha algae and floating leaves of Unbranched bur-reed (Sparganium erersum), Herefordshire Lowlands, England, UK. June, 20...
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Nick Upton / Smooth stonewort (Nitella flexilis) growing in garden pond, Wiltshire, UK. May.
