Related Clues:
- Coral formation - kind of knot
- Rocks in shallow water
- Hazard for ships
- Reduce a sail's surface - shipping hazard
- Shorten sail
- Predatory fish (or person?)
- Biodiverse habitat
- Diver's domain
- Something for snorkelers to look at but not touch
- Pilot's hazard
- Seaman's knot
- Lough near French capital is covered by shallow water
- Snorkeling spot, perhaps
- Popular snorkeling destination
- Rocky part of sail