| Answer | Crossword Clue |
|---|---|
| undercurrent | a current below the upper currents or surface |
| undercurrents | UNDERCURRENT, a current below the upper currents or surface |
| mesosphere | a zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle |
| mesospheres | MESOSPHERE, a zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle |
| underset | a current below the surface of the ocean |
| undercurrents | A current of water below the surface, moving in a different direction from any surface current |
| undercurrent | A current of water below the surface, moving in a different direction from any surface current |
