Related Clues:
- Submerged barrier
- Pink and black stuff on banks of river
- Hazard at sea -- do something to reduce canvas
- Place divers explore
- Diverse ecosystem
- Place for a sponge
- Bank right to reject payment
- Foundation of many islets
- Coral __
- Vocal about going ahead to see reef creatures
- It forms reefs in warm seas
- Where to find some very wet sponges
- Third grade got with exam? It's pretty hard
- 6 Down component
- Admire efforts to ring bank