| Rating | Solver | Clue |
|---|---|---|
| FINS | Swimming organs | |
| NATATORY | Adapted for swimming or floating; as, natatory organs. | |
| CILIA | Small, vibratory, swimming organs, somewhat resembling true cilia, as those of Ctenophora. | |
| WING-FOOTED | Having the anterior lobes of the foot so modified as to form a pair of winglike swimming organs; -- said of the pteropod mollusks. | |
| SIPHONOPHORA | An order of pelagic Hydrozoa including species which form complex free-swimming communities composed of numerous zooids of various kinds, some ... | |