| LADRONE | Former name of the Mariana Islands |
| GUAM | Largest and southernmost of the Mariana Islands in the W Pacific, and the westernmost territory of the United States (4) |
| CHAMORRO | An indigenous people of the Mariana Islands in the Pacific Ocean (8) |
| ROTA | One of the Mariana Islands |
| UNEXPLORED | Like much of the Mariana Trench |
| TOPSPEED | Fastest at which rise of the Mariana Trench? (3,5) |
| CHALLENGERDEEP | Southern part of the Mariana Trench |
| SAIPAN | Largest of the Northern Mariana Islands and former US airbase (6) |
| TRENCH | The deepest point on the Earth's surface is located in the Mariana ______ in the Pacific Ocean. (6) |
| MICRONESIA | The NW division of Oceania, which includes the Mariana, Caroline, Marshall, and Kiribati island groups, and Nauru Island |
| IWO | Mariana Islands neighbor, for short |
| CHALLENGER | - Deep; situated around 11km below sea level in the Mariana Trench, the deepest known point in Earth |
| PACIFICOCEAN | Waters with a maximum depth of around 11,000 metres in the Mariana Trench |
| DEEPSEA | Relating to such places as the Mariana Trench |
| INDEEPWATER | Like ship over the Mariana Trench experiencing difficulty |
| DEEP | Like the Mariana Trench |
| DEEPER | Like the Mariana Trench, compared to any other place on Earth |
| ADROPINTHEOCEAN | Insignificant part of the whole Mariana Trench? (1,4,2,3,5) |
| DEPTH | Almost seven miles, for the Pacific Ocean's Mariana Trench |
| NENE | Latin name meaning dwarf, as in Picea mariana '___' (4) |
