| Clue | Source | Date |
|---|---|---|
| Marine microorganism | ||
| Single-celled ocean organism | ||
| Unicellular alga | LA Times Daily | 19 Dec 2021 |
| Plankton form | Thomas Joseph | 15 Jan 2019 |
| Tiny bit of algae | The Washington Post Sunday | 10 Jun 2018 |
| Common type of phytoplankton | The Chronicle of Higher Education | 10 Feb 2017 |
| Common type of phytoplankton | ||
| Unicellular alga | LA Times Daily | 19 Nov 2016 |
| Bit of algae | Eugene Sheffer | 16 May 2015 |
| Microscopic alga | ||
| Microscopic alga | ||
| Simple bit of plankton | ||
| Microscopic algae | ||
| Microscopic algae | ||
| Form of algae | ||
| One-celled sea creature | ||
| Microscopic alga | ||
| Plankton constituent | ||
| Microscopic algae | ||
| Plankton component | ||
| Single-celled alga | ||
| One-celled alga | ||
| Microscopic plant: Bot. | ||
| Marine or freshwater alga. | ||
| Aquatic one-celled plant. | ||
| Microscopic alga: Bot. | ||
| One-celled marine plant. |