| A | B |
|---|
| cramped | shut into a small space |
| debris | scattered fragments; ruins; rubbish |
| interior | inner surface or part; inside |
| ooze | a soft mud or slime, especially at the bottom of a pond or river or on the ocean floor |
| robotic | of or for a machine with moving parts and sensing devices controlled by a computer |
| sediment | material that settles to the bottom of a liquid |
| sonar | device for finding the depth of water or for detecting and locating underwater objects |
| ascent | the act of going up |
| intact | with nothing missing or broken; whole |
| viewport | a small window in a small vessel |
