| A | B |
|---|
| crest | highest point of a wave |
| breaker | created by the collapse of a wave |
| jettie | Structure built to protect beaches from littorial drift |
| barrier reef | created by corals |
| Neritic Zone | zone where sea otters and kelp live |
| Oceanic Zone | Zone where whales and sharks live |
| Upwelling | a circulation that brings deep cold water to the ocean surface |
| occurs when dense seawater sinks under less dense seawater | density current |
| mid ocean ridge | where new ocean forms |
| where one crustal plate is forced under another | trench |
| all swimming forms of fish and other animals | nekton |
| benthos | bottoms dwellers |
| sea urchins | main food for sea otter |
| krill | main food for whales |
