Related Clues:
- Snorkelers' spots
- Hidden hazards for boaters
- Hidden hazards off shore
- Hazards for a 65-Across
- Submerged ridges of rock or coral
- Often submerged shipping dangers
- Thus shortens said — to avoid these dangers?
- Sites of some wrecks
- Lobster habitats
- Sunken ship sites
- Hidden maritime hazards
- Raise charge in case of rapids or rocks
- Homes to shipwrecks
- Some endangered ecosystems
- Atolls, e.g