To find the new position of the submarine after it descends 108 feet from its current position of 550 feet below sea level:
- Start with the initial depth of the submarine: -550 feet (since it is below sea level).
- The submarine descends further by 108 feet, so we need to subtract that from the current position.
The calculation will be: \[ -550 - 108 = -658 \]
So, the new position of the submarine is -658 feet.