| feed on krill | 0.60 |
| lived on earth | 0.42 |
| respond to simulated mi… | 0.31 |
| humpback whale | 0.28 |
| singe little flat | 0.28 |
| belong to the baleen wh… | 0.25 |
| become entangled | 0.25 |
| hear each other | 0.20 |
| twin blowholes | 0.28 |
| different calls | 0.28 |
| marine mammal | 0.28 |
| spotted | 0.37 |
| hunted to extinction | 0.24 |
| killed in antarctic wat… | 0.20 |
| difficult to weigh | 0.16 |
| killed by ship | 0.16 |