Related Clues:
- Reduce, as a sail
- Mariner's hazard
- Snorkeling venue
- Endangered ecosystem
- Where ships may run aground
- Lagoon barrier
- Ridge of rock under surface of sea
- Chain of rocks near the surface of the sea
- Ridge of rock just under water
- Ridge near the surface of water
- Underwater obstruction
- Ridge of rock or sand just under surface of sea
- Kind of knot
- Ridge just under surface of water
- Underwater ridge or kind of knot