Related Clues:
- Knot sailors try to avoid
- Rocks in shallow water - kind of knot
- Rocky ridge near sea surface
- Rock in shallow water
- Kind of knot (avoided by sailors?)
- Large group of fish - sandbank
- Circular movement of air
- Coral ____ - ____ knot
- Chain of rocks underwater
- Rock formed of coral
- Undersea ridge
- Coral formation - kind of knot
- Rapid circular current
- Rocks in shallow water
- Hazard for ships