Crossword clues for the word: ROTIFER The word ROTIFER has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for ROTIFER Showing 1 to 8 of 8 results Clue(s) Aquatic animalcule Microscopic animal that swims with whirling cilia Minute aquatic animal. Minute aquatic organism Plankton animal Tiny aquatic organism Tiny marine animal Wheel animalcule.