What are these dots on the map?

Here's a map which was published today in a British tabloid. As you can see they are all around the coastline. But can you guess what they mark.
What are these dots on the map?
Shark attack sites over the past ten years
Illegal migrant entry points
Nudist beaches
Places children have been fined for building sandcastles
Places people have been hospitalised by seagulls
Select gender and age to cast your vote:
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1 y
Correct answer is nudist beaches.
What are these dots on the map?
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