| Term | Definition |
| aquarium | a container, such as a tank or pool, filled with water for keeping live fish or other water plants and animals |
| aquatic | living or growing in water |
| dehydrate | to become dry; to lose water |
| geology | the science that deals with rocks and the physical history of the earth |
| geometry | the branch of mathematics that deals with the measuring of lines, angles, surfaces and solids |
| marina | a boat basin that has docks, moorings, supplies, and other facilities for small boats |
| mermaid | an imaginary sea creature with the upper part of the body like that of a woman and the lower part like the tail of a fish |
| submarine | a boat that is built to travel and operate on or below the surface of the water |
| terrace | a level tract of land which is higher than the surrounding ground on one or more sides |
| terrestrial | existing on earth; related to inhabiting the land as opposed to the sea |