| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| 18th century German geologist Abraham Werner was called a neptunist because he believed all rocks originated from here | the ocean | $200 | J | GEOLOGY | 2024-07-18 | #9149 | |
| Abraham Werner & his followers in the 18th c. were called Neptunists; they believed that all rocks were formed here | the ocean | $400 | J | GEOLOGY | 2007-06-15 | #5255 | |
| A sonar transducer is used by hydrographers to obtain knowledge about earthquake activity here | under the ocean DD | $1,200 | DJ | GEOLOGY | 2003-09-11 | #4369 |