• Citclops is supported by the EC-FP7 Programme, grant agreement nº 308469
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    Citizens’ Observatory for Coast and Ocean Optical Monitoring

    Discover the different colours of the sea

    The colour wheel contains different water colours. Click the parts to retrieve the assigned Forel-Ule numbers from different regions of the world. Explore the differences in water colour from the Wadden Sea to the Yellow Sea!

    FU5 FU2 FU21 FU19 FU16 FU14 FU12 FU8

    Images of water colour: Courtsey of J. de Jong, M. Wernand, O. Zielinski & J. A. Busch

    Learn more about water colour here