Mooring place seems pretty black (5)

I believe the answer is:

jetty

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This clue might be a double definition.

'mooring place' is the first definition.
'jetty' can be an answer for 'mooring' (thesaurus). I'm unsure of the 'place' bit.

'pretty black' is the second definition.
'jetty' can be an answer for 'black' (thesaurus). I am not certain of the 'pretty' bit.

'seems' is the link.

Can you help me to learn more?

(Other definitions for jetty that I've seen before include "Quay" , "Small landing stage" , "Dock" , "Wharf" , "Pier - landing stage" .)

I've seen this clue in The Irish News.

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