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Dieren en planten

Animals   Sea squirts   Star ascidian   Leathery sea squirt   Ciona intestinalis   Algae and seaweed   Diatoms   Flagellates   Phytoplankton   Harbour fauna   

Water en land

Landforms   Coastal areas   Rocky coasts   Tidal flats and shallows   Salt marshes   Beaches   Southern North Sea   Coastal zone   Voordelta   Delta   Delta nature    

Mens en Milieu

Water   Water currents   Sea currents   Matter and materials   Seawater   Nutrients   Phosphoric compounds   Mining at sea   Drilling platforms   Safety at sea   Wrecks   
  • Dut: Doorschijnende zakpijp
  • Lat: Ciona intestinalis
  • Eng: Sea squirt
  • Ger: Schlauch-Ascidie
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Ciona intestinalis, Asbjorn Hansen, via Flicr.com

Ciona intestinalis

The Ciona intestinalis is a robust, yellow-green colored sea squirt, with a bright yellow edge on the rim of the siphons. The sac is thin, smooth and weak. The Ciona intestinalis is commonly found in harbours along the Oosterschelde and the Grevelingen.