| A | B |
|---|
| produces much Produces the Earth’s oxygen and serves as the base of the ocean ecosystem | Phytoplankton |
| Most algae is found here | above the continental shelf |
| Tides | caused by the gravitational pull of the moon |
| Currents | caused by wind patterns, water salinity and temperature |
| The place where water meets the land | the shelf (shoreline) |
| salinity | the amount of salt in water |
| seamount | underwater volcano, sometimes form an island |
| trench | deep, narrow valley |
| Continental slope |  |
| bioluminescent | animal's ability to make their own light |
| submersible | an underwater vehicle |
| sonar | sound waves used to map the ocean floor |
