seamount
- n an underwater mountain rising above the ocean floor
- The Marsili seamount--submerged in a few thousand meters of water north of Sicily--has the theoretical potential to wreak havoc some day by generating seismic waves known as .
- The metal-rich seamount, he found, has a particularly strong magnetic field.
- For comfort, she spends her days skindiving at the secret place he had shown her: a seamount, or underwater volcanic formation, where an astonishing variety offish gather and .