Crossword clue: a floating or swimming oceanic colony of polyps often transparent or showily colored

The most common answer is siphonophore (12 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

siphonophore 12 letters wn-def

a floating or swimming oceanic colony of polyps often transparent or showily colored