Scours harbour — with nothing like a walrus to be seen? (5-6)

I believe the answer is:

clean-shaven

'with nothing like a walrus to be seen?' is the definition.
(walrus moustache is a type of facial hair)

'scours harbour' is the wordplay.
'scours' becomes 'cleans'.
'harbour' becomes 'haven' ('haven' can be a synonym of 'harbour').
'cleans'+'haven'='CLEAN-SHAVEN'

(Another definition for clean-shaven that I've seen is " Unbearded".)

I've seen this clue in The Times.

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