| Term | Definition |
| reef | A ridge of rocks, sand, or coral near the surface of water. |
| lagoon | A shallow body of water separated from sea by sandbars or coral reefs. |
| harpoon | A spearlike weapon used to hunt large fish |
| outrigger | A pole extended outboard from the side of a boat, esp., as in South Pacific canoes, supporting a float that gives stability. |
| anxiously | Full of mental distress or uneasiness because of fear of danger or misfortune. |
| expedition | A journey with a goal or purpose. |
| crag | A steep, rugged rock; rough, broken, projecting part of a rock. |
| companion | A person who is frequently in the company of, associates with, or accompanies another |
| pandanus | A plant having sword-shaped leaves arranged in a spiral. |
| dorsal | Of, pertaining to, or situated at the back. |
| dense | Transmitting little light. |
| dismay | Sudden or complete loss of courage; utter disheartenment. |
| phosphorus | A substance that glows with a yellowish or white light. |