| A | B |
|---|
| Plankton | They float at or near the surface of the ocean, largest group of palnts and animals |
| Nekton | Forms of ocean life that swim |
| Benthos | Organisms that live on the bottom of the ocean floor |
| Intertidal Zone | The most changeable zone in the ocean |
| Neritic Zone | Extends from the low-tide line to the edge of a continental shelf. |
| Bathyal Zone | It begins at a continental slope and extends down about 2,000 meters |
| Abyssal Zone | This zone covers the large,flat plains of the ocean |
| Challenger Deep | The deepest spot on Earth |
