| A | B |
|---|
| Matthew Maury | the first man to make an organized study of the sea |
| oceanography | the scientific study of the ocean |
| currents | "paths of the sea" |
| Gulf Stream | great current that warms air in England |
| Humboldt Current | sweeps up from the S. Pole along the western coast of S. America, is full of plankton |
| oceanographers | scientists who study the oceans |
| continental shelf | area of underwater land along the edtes of the continents |
| continental slope | lies between the continental shelf and the ocean floor; no plant life here |
| trenches | located at the base of the slope; deepest part of the ocean |
| Mariana Trench | deepest known spot in the ocean |
| ocean floor | the very bottom of the ocean |
| oceanic ridges | long mountain ranges underwater |
| seamounts | isolated underwater mountains |
| Hawaiian Islands | volcanic islands |
| plankton | tiny, floating plants and animals |
| aqualung | device used by a scuba diver which is made up of one or more tanks of compressed air |
| blue whale | the largest animal that has ever lived |
| marine mammals | mammals which are designed to live in the sea |
| baleen | a hard but flexible substance like fingernails in the whales mouth |
| gills | special structures that allow fish to remove dissolved oxygen from water |
| nene | Hawaiian goose; rare bird native to Hawaii |
| beluga whale | lives in the Arctic; only truly white whale |
| sperm whale | largest of the toothed whales, feeds on giant squid that live deep in the ocean; hunted at one time for its oil |
| dophin | identified by its pointed snout |
| porpoise | identified by its blunt head |
