Animal rescue groups are trying to trace a seal spotted swimming in the Amstel river near Amsterdam on Sunday evening. The seal was first seen by a sluice near De Kwakel in Noord-Holland province. There officials decided to open the sluice gates so the animal could continue towards Uithoorn and the IJ and back to the sea. However, it was later spotted on the Amstel river near Amsterdam and then lost from view. A team of experts from animal rescue...

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