Part super for 'Mermaids' actress? (9)

I believe the answer is:

performer

'actress?' is the definition.
(actress is a kind of performer)

'part super for mermaids' is the wordplay.
'part' indicates a hidden word.
'PERFORMER' can be found hidden inside 'super for mermaids'.

(Other definitions for performer that I've seen before include "Entertainer" , "player" , "Fred Astaire, say" , "star?" , "Eg 9 [ACTRESS]" .)

I've seen this clue in The Telegraph.

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