| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The nictitating membrane on a crocodile that helps it see underwater is often called the third this | an eyelid | $1,000 | J | BIOLOGY | 2023-09-14 | #8929 | |
| It should take just a wink to tell us a nictitating membrane is a third one of these found in birds | an eyelid | $400 | DJ | BIOLOGY | 2013-03-08 | #6560 |