| Answer | Crossword Clue |
|---|---|
| seabed | the seafloor (the bottom of the sea) |
| seabeds | SEABED, the seafloor (the bottom of the sea) |
| seafloors | SEAFLOOR, the bottom of the sea |
| neritic | of or pertaining to the region of water lying directly above the sublittoral zone of the sea bottom |
| oceanic | of or pertaining to the region of water lying above the bathyal, abyssal, and hadal zones of the sea bottom |
| benthos | the biogeographic region that includes the bottom of a lake, sea, or ocean, and the littoral and supralittoral zones of the shore |
| sounding | The area of sea close to the shore that is shallow enough for the bottom to be reached by means of a sounding line |
