| SNORKELS | Visits a coral reef, perhaps |
| SNORKELED | Went underwater to see a coral reef perhaps |
| SNORKEL | Explore coral reefs, perhaps |
| STARFISH | Known collectively as a galaxy or a constellation, a marine echinoderm inhabiting a coral reef, rock pool, seagrass meadow or kelp forest (8) |
| ATOLL | A ring forming a coral reef |
| FISH | General word for a shoaling or schooling marine vertebrate inhabiting a coral reef, for example (4) |
| CAY | A sandy island on the surface of a coral reef (3) |
| ECOSYSTEM | Word for a biological community of flora/fauna and the physical environment in which they collectively interact, such as a coral reef, rainforest, river or woodland (9) |
| LAGOON | Water protected by a coral reef |
| LEI | Floral wreath by a coral reef |
| SCUBA | Gear used while exploring a coral reef |
| UNDERSEA | Like a coral reef |
| POLYP | Tentacled resident of a coral reef |
| SCUBADIVE | Explore a coral reef, e.g. |
| SCUBAS | Dives near a coral reef, say |
| SCUBADIVER | One admiring a coral reef at great depth: 2 wds. |
| NAURU | Southwest Pacific island surrounded by a coral reef, with an economy based heavily on phosphate mining (5) |
| KNOT | At sea, speed for a reef, perhaps |
| CORAL | Carol comes to grief on the reef, perhaps |
| ROCKS | Reels on the reef, perhaps (5) |
