Rider who gets wet (6)

I believe the answer is:

surfer

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'rider who gets wet' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?

This is the entire clue.

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(Other definitions for surfer that I've seen before include "Boarder" , "person online?" , "following 28 [SILVER]" , "One browsing Internet" , "Board rider" .)

I've seen this clue in the Evening Standard.

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