Filtering the sea
About 10 years ago I started working for de Natuurschool (the Nature school). For this organization I guided many school excursions. A few years ago I stopped working as a guide, but now I return every year with my own school for an excursion. Highlight is always the walk we have on the mudflat. The Wadden Sea is a very shallow sea and large parts of it dry up during low tide. It’s always nice to walk around on a place where there was over a meter of water only a few hours ago.
Here you see a bed of Mussels. These shells filter their food out of the sea. Therefor the sea bottom next to those beds are always more muddy as the area’s at a greater distance. It is said that all the water (at high tide) in the Wadden Sea passes a Mussel every 14 days!