Which of European peninsulas has the most unstable shoreline?

Iberian Peninsula
Scandinavian Peninsula
Balkan Peninsula
Italian Peninsula
Before the 18th century, it was thought in Sweden that sea levels were falling. On the initiative of Anders Celsius a number of marks were made in rock on different locations along the Swedish coast. In 1765 it was possible to conclude that it was not a lowering of sea levels but an uneven rise of land, later recognized as post-glacial rebound.
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Debbie Fox
reach: rather globalEuropegeographygeography of ScandinaviageologyScandinaviaSweden