" Whoever likes to tan their bottoms as well can do this at various nude beaches. "
There are enough places to go nude along the North Sea beaches. This is allowed at the following locations:
Between pole 4.09 and 5
Between pole 8.4 and 9.4
Between pole 14.5 and 16.8
Between pole 30 and 31
Between pole 47 and 48
Between pole 49 and 50
Holland Boven Amsterdam