| SUNKENSHIP | Source of ocean treasure, perhaps |
| SEEDPEARL | An oyster's tiny nacreous ocean treasure, demure lustrous droplet or miniature jewel of the sea - at less than a quarter of a grain in weight, it is often harvested to be sewn into lace, strung into a |
| SCUBADIVER | Ocean treasure hunter |
| PEARLDIVER | Ocean treasure hunter |
| CHEST | Container of riches, treasure, perhaps (5) |
| OAK | NS island of buried treasure, perhaps |
| SAUCE | Container of riches, treasure, perhaps (5) |
| UNDERSEA | Sunken treasure, perhaps? (8,8) |
| DEPOSITS | Sunken treasure, perhaps? (8,8) |
| SILVER | Pirate's treasure, perhaps? (6) |
| DUG | Sought buried treasure, perhaps |
| DIG | Search for hidden treasure perhaps |
| SCUBADIVE | Seek treasure perhaps in small island, shady place (5,4) |
| SEAANEMONE | One of a group of ocean-dwelling polyps of the order Actinaria (3,7) |
| PACIFIC | Description of current provided in snapshot of ocean (7) |
| ASSESS | Value a couple of ships around centre of ocean |
| HEATWAVE | Sounds like instruction to warm part of ocean in prolonged period of hot weather (4,4) |
| OARED | Descriptive of galley, a shade beneath surface of ocean (5) |
| CORAL | Consequence of rising acidification levels first signs of ocean distress (5) |
| YELLOWSEA | Area of ocean between China and the Korean peninsula, site of Korean 'peace zones' (6,3) |
