Related Clues:
- Sand dollar habitats
- Ocean floors
- Greener fish regularly spotted in coral banks
- Underwater hazards
- Submerged coral ridges
- Nautical hazards mean one takes in sail
- Groups of submerged rock
- Ridges of coral
- Playing free, skinhead rocks
- Locales for many schools
- Menaces for mariners
- Sailing worries
- Some protective barriers
- Starfish habitats
- Hull-damaging structures