Barrier Reef Organism Crossword Clue — 5 Letters

One confident answer with explanation of the wordplay

CORAL

Best match

C

O

R

A

L

A barrier reef is made up of coral organisms. "Coral" is the classic 5-letter answer for any reef-related clue in crosswords.

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Other possible answers

POLYPCoral polyps are the actual living organisms that build reef structures, a very plausible 5-letter answer.

ALGAEAlgae are organisms found in reef ecosystems, 5 letters.

PRAWNA reef-dwelling organism, though less directly associated with barrier reefs.

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