Social worker in ocean trip (3)

I believe the answer is:

ant

'social worker' is the definition.
(I've seen this before)

'in ocean trip' is the wordplay.
'in' indicates a hidden word.
'ANT' is hidden within 'ocean trip'.

(Other definitions for ant that I've seen before include "Small social insect" , "colonist" , "Small busy insect" , "` `Go to the ... thou sluggard' '" , "Termite" .)

I've seen this clue in The Sun.

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