| NAUTILUS | Ancient species of marine mollusc found in the Indo-Pacific (8) |
| QUAD | Group of nations (Australia, India, Japan, and the United States) formed to counter China's influence in the Indo-Pacific region. (4) |
| TUSKSHELL | Burrowing marine mollusc found around NZ coasts (4,5) |
| CLAM | Mollusc found in secret location |
| SEASHELL | Hard remains of marine mollusc (8) |
| MUSSELS | Bivalve molluscs found in clusters attached to rocks around the Atlantic coasts in the northern hemisphere and the Mediterranean (7) |
| HOMOHABILIS | The most ancient species of the human genus (4,7) |
| SPELT | Ancient species of wheat |
| AUGERS | Corkscrew-like drill bits to whose shape the tapering spiral shells of marine molluscs in the genus Terebra are likened (6) |
| SHELL | Hard outer case of marine molluscs (5) |
| CLAMS | Type of marine molluscs with shells |
| GREYSEAL | Species of marine mammal found in the North Atlantic (4,4) |
| SEAWEEDS | Species of marine algae (8) |
| SCORPIONFISH | One of a family of bottom-dwelling marine fish of the Indo-Pacific noted for their venomous spines (8,4) |
| BARRAMUNDI | Predatory sea fish of the Indo-Pacific (10) |
| GREY | ___ reef shark - marine species found in Indo-pacific (4) |
| AVESTAN | The oldest recorded language of the Iranian branch of the Indo-European family (7) |
| DRAGONFISH | Little ____, marine creature, also called a sea moth, encased in bony rings found in Indo-Pacific waters (10) |
| SEABASS | Common species of marine fish, usually called hapuka in New Zealand (3,4) |
| OYSTER | Edible, marine, bivalve mollusc found on the sea bed (6) |
