From this research we can conclude:
- The Big Five of benthic animals in the Wadden Sea is different in each sub-area. Even in the same habitat-types we see major differences: in two of the three intertidal mudflats, worms are the most numerous, but in a third area this is an amphipod.
- The numbers of animals vary widely, even in similar habitats. For example, the western Wadden Sea has more than 40,000 animals per m2, but the eastern Wadden Sea only has a few hundred.