| Clue | Source | Date |
|---|---|---|
| Reach a maximum depth | Newsday | 18 Aug 2021 |
| Prove not to be buoyant | Universal | 10 Nov 2015 |
| Descend as far as possible, as a shipwreck | ||
| Prove not to be buoyant | ||
| Hit a new low? | ||
| Reach the lowest point | ||
| Flunk a buoyancy test | ||
| Fail to be buoyant | ||
| Make a new low |