Related Clues:
- Rock formed of coral
- Tiny animal forming reef
- Undersea ridge
- Calcareous skeletal remains forming reefs
- Coral formation - kind of knot
- Rocks in shallow water
- Hazard for ships
- (Massed skeletons of) tiny invertebrate
- Animal forming reef
- Reduce a sail's surface - shipping hazard
- Creature building reef
- Shorten sail
- Kind of 25 half-heartedly put in pen
- Biodiverse habitat
- Diver's domain