Related Clues:
- Little ones are calves
- Frozen floating hazards
- Ice mountains
- Antarctic floaters
- Largely submerged threats
- They may come off the shelf
- North Atlantic perils
- Arctic shipping hazards
- Frigid water hazards
- Polar bears' perches, for short
- Calves come from them
- Floating ice masses
- Icy arctic hazards
- Icy mountains
- Mountains of ice