![Collection of different sea shells on vivid yellow background. Set of empty tropical shells clams. Vacation and summer holidays concept. Top view Stock Photo - Alamy Collection of different sea shells on vivid yellow background. Set of empty tropical shells clams. Vacation and summer holidays concept. Top view Stock Photo - Alamy](https://c8.alamy.com/zooms/9/c19c88ad6b03491e85d3b812721beec0/ced1px.jpg)
Collection of different sea shells on vivid yellow background. Set of empty tropical shells clams. Vacation and summer holidays concept. Top view Stock Photo - Alamy
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The soft-shell clam in the North Sea basin: descendants of ancestors hitchhiking with the Vikings from North America to Europe? - Deltares
![The soft-shell clam in the North Sea basin: descendants of ancestors hitchhiking with the Vikings from North America to Europe? - Deltares The soft-shell clam in the North Sea basin: descendants of ancestors hitchhiking with the Vikings from North America to Europe? - Deltares](https://www.deltares.nl/app/uploads/2017/03/figure2-735x551.jpg)
The soft-shell clam in the North Sea basin: descendants of ancestors hitchhiking with the Vikings from North America to Europe? - Deltares
![Colorful and diverse shells on the coast of Butjardingen in Wesermarsch, Lower Saxony, Germany Stock Photo - Alamy Colorful and diverse shells on the coast of Butjardingen in Wesermarsch, Lower Saxony, Germany Stock Photo - Alamy](https://c8.alamy.com/comp/2BC0YTG/colorful-and-diverse-shells-on-the-coast-of-butjardingen-in-wesermarsch-lower-saxony-germany-2BC0YTG.jpg)
Colorful and diverse shells on the coast of Butjardingen in Wesermarsch, Lower Saxony, Germany Stock Photo - Alamy
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