Related Clues:
- Frozen floating sheet
- Losing wings, sick bird repelled main danger
- Subject featuring more than meets the eye, its victim earlier brought up by the same author
- Seabird approaching islands turns tail to find colder destination
- A danger to shipping, one key diver recalled
- What sunk the Titanic
- Floating sheet
- Main hazard when diver starts to cough it up
- Expanse of frozen water witches followed regularly
- Lettuce that has hidden depths?
- Large block of frozen water
- Shipping hazard, even traces of zinc, diver raised
- Hazard of polar seas
- I feel cold (not half) at sea
- Penguin carrier, maybe