| Answer | Crossword Clue |
|---|---|
| seafloor | the solid surface underlying a sea or an ocean |
| substrata | An underlying layer or substance, in particular, a layer of rock or soil beneath the surface of the ground |
| counterirritant | Something such as heat or an ointment that is used to produce surface irritation of the skin, thereby counteracting underlying pain or discomfort |
| expanses | An area of something, typically land or sea, presenting a wide continuous surface |
