| A | B |
|---|
| continental shelf | underwater land along the edges of the continents |
| current | a flowing stream within the ocean |
| gills | breathing structures for fish |
| ocean floor | the bottom of the ocean |
| oceanographers | scientists who study the ocean |
| plankton | tiny plants and animals found in the ocean |
| seamount | an isolated underwater mountain |
| continental slope | the area between the continental shelf and ocean floor |
| aqualung | an underwater breathing device |
| submersible | small submarine |
| oceanic ridges | long mountain ranges under the ocean |
| trench | the deepest part of the ocean |
| Humboldt Current | cold water current |
| Gulf Stream Current | warm water current |
| Matthew Maury | the first man to make an orderly study of the sea |
| oceanography | the study of the ocean |
