Decor also incorporates colourful marine life (6)

I believe the answer is:

corals

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'decor also incorporates colourful marine life' is the definition.
I can't judge whether this defines the answer.

'decor also incorporates' is the wordplay.
'incorporates' indicates the answer is hidden within the clue.
'CORALS' is hidden in the letters of 'decor also'.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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