Answer: rotifer

AnswerCrossword Clue
ROTIFERMinute aquatic organism
ROTIFERTiny marine animal
ROTIFERMicroscopic water animal.
ROTIFERMinute aquatic animal.
ROTIFERWheel animalcule.
ROTIFERAquatic animalcule
ROTIFERMicroscopic animal that swims with whirling cilia
ROTIFERTiny aquatic organism
rotifera microscopic aquatic organism
rotiferany of a class (Rotifera of the phylum Aschelminthes) of minute usually microscopic but many-celled chiefly freshwater aquatic invertebrates having the anterior end modified into a retractile disk bearing circles of strong cilia that often give the appearance of rapidly revolving wheels
rotiferany microscopic animal of the phylum (or class) Rotifera, found in fresh and salt waters, having one or more rings of cilia on the anterior end