| spend the summer | 0.33 |
| plunge with tremendous … | 0.33 |
| pass san diego | 0.31 |
| make lively show | 0.30 |
| migrate to baja | 0.25 |
| feed on amphipod | 0.25 |
| head to their summer fe… | 0.25 |
| pass on each trip | 0.25 |
| baleen whales | 0.68 |
| distributed in recent y… | 0.57 |
| spotted | 0.54 |
| trapped in pack ice | 0.25 |
| distributed throughout … | 0.25 |
| removed | 0.25 |
| hunted to extinction | 0.16 |