| Clue | Source | Date |
|---|---|---|
| Algae turning to aim at the dots (7) | ||
| Some plankton | Thomas Joseph | 06 Oct 2023 |
| Some plankton | Wall Street Journal | 12 May 2016 |
| Plankton particles | ||
| Types of algae | ||
| Algae | ||
| Freshwater algae | ||
| Certain algae | ||
| Microscopic algae. | ||
| Microscopic freshwater algae. |