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!

Arjen Drost

Arjen is a Polar ecologist, nature photographer and full time expedition guide on expedition cruise ships in both Polar regions. With his pictures and stories he likes to show the beauty of these very fragile and threatened places.

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