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  1. 10th edition IVN Dutch Ditch Days

    Event
    The 10th edition of the IVN Dutch Ditch Days will take place between 10 and 16 June 2024. During these days, IVN guides children in taking a closer look at the aquatic animals and plantlife in Dutch ditches. NIOO uses the observations the children make to study the water quality.
    IVN Slootjesdagen

  2. Backswimmer most counted water animal during Dutch Ditch Days

    Press release
    This past weekend, thousands of people took part in the first nationwide 'citizen science' ditch survey in the Netherlands. The most counted water animals was the backswimmer (a.k.a. water boatsmen).
    Bootsmannetje