| Clue | Source | Date |
|---|---|---|
| Large brown seaweeds | ||
| 'Trees' in underwater forests | New York Times | 09 Nov 2020 |
| Brown seaweeds | ||
| Brown seaweeds | New York Times | 27 Oct 2019 |
| Varieties of seaweed | Family Time | 10 Mar 2019 |
| Some seaweeds | ||
| Some seaweeds | ||
| Certain seaweeds | ||
| Iodine sources | ||
| Varieties of seaweed | ||
| Varieties of seaweed | ||
| Seaweeds | ||
| Large seaweeds | ||
| Large brown seaweeds | ||
| Certain seaweeds | ||
| Marine plants | ||
| Iodine-rich seaweeds | ||
| Seaweeds | ||
| Seaweeds that furnish iodine | ||
| Large coarse seaweeds. | ||
| Brown seaweeds. | ||
| Giant seaweeds. | ||
| Large brown seaweeds. | ||
| Masses of seaweed. | ||
| Seaweeds. |