| Answer | Crossword Clue |
|---|---|
| BERG | Arctic sea menace |
| BERG | Arctic menace |
| ORCA | Sea menace |
| PIRATE | Sea menace |
| PIRATE | Menace at sea |
| UBOAT | Wartime sea menace |
| UBOAT | WWII sea menace |
| BUCCANEER | 17th-century sea menace |
| UBOAT | W.W. II sea menace |
| SQUID | "20,000 Leagues Under the Sea" menace |
