Related Clues:

• Big ice sheet
• Bit of ice
• Seal's resting place, perhaps
• Frozen floater
• Icy North Atlantic hazard
• Icy penguin hangout
• Floating sheet of ice
• Arctic ice mass
• Arctic hazard, for short
• Top-of-the-world topper
• Polar bear holder
• Floater in the Arctic Ocean
• Cold water hazard
• See 65 Down
• Penguin's locale