| Clue | Source | Date |
|---|---|---|
| Relatives of narwhals | New York Times | 03 Nov 2024 |
| Wise book about extremely unusual round marine creatures | The Telegraph Toughie | 10 Oct 2024 |
| Whales in Canada's St. Lawrence Estuary | ||
| Whales known as "canaries of the sea" | Universal | 03 Dec 2019 |
| White whales | New York Times | 03 Nov 2017 |
| White whales | ||
| Caviar fishes | USA Today | 02 Nov 2015 |
| Caviar fishes | ||
| Caviar sources | ||
| Caviar fish | ||
| Sturgeon yielding expensive caviar | ||
| Sturgeon yielding expensive caviar | ||
| Small whales | ||
| Eurasian sturgeons | ||
| Caviar fish | ||
| Caviar fish | ||
| Source of fine caviar | ||
| Caviar sources | ||
| White whales | ||
| White whales. |