suboceanic
adjEtymology From sub- + oceanic.
1
Beneath the surface of the ocean.
- His eyes, like hard bright sea creatures hiding deep under a suboceanic shelf, regarded Charlie with a pure malignant fury...1984, Dean Koontz, The Servants of Twilight:
- Low attenuation translates directly to efficient long-distance communications, such as transatlantic or other suboceanic cable routes...2007, Pelin Aksoy, Laura DeNardis, Information Technology in Theory: