Related Clues:
- Whorl
- Arnold of country
- Nelson who sang "Ah! Sweet Mystery of Life"
- Stony ______, Saskatchewan
- Fast part of a river ride
- Kayaker's obstacle
- Marine hazard
- Rafting challenge
- Spin zone?
- Water in a whirl
- Fluid dynamics phenomenon
- Draining activity
- ''Science and Health'' author
- Sight near a drain
- Little swirl in water