1. Willing to take risks

2. Organized journey, often for scientific purposes

3. Large floating chunk of ice

4. Severe snowstorm with strong winds

5. Relating to the southernmost continent

6. Frozen precipitation

7. Mass of ice covering an area

8. Vast, treeless polar region

9. Process of planning and controlling movement

10. Expert in science

11. State of being alone or separated

12. Natural light display in the polar regions

13. Low temperature

14. Far away from populated areas

15. Something unexplained or unknown

16. Solid form of water

17. Marine mammals that live in cold waters