Across
- 1. complex calls—migrate in sync with sea ice patterns in Arctic
- 3. The largest penguin species
- 4. butterflies have the longest migration of any butterfly species
- 7. make the longest migration of any animal in the world.
- 9. Their migration is one of the most incredible in the
- 10. They form giant single-file lines known as queues
Down
- 2. Spawning peaks around full and new moon high tides
- 5. inhabit the northern seas off Russia
- 6. The mothers give birth during migration
- 8. Their march is timed with rain