sea level
US /ˈsiː ˌlev.əl/
UK /ˈsiː ˌlev.əl/

1.
zeeniveau
the average height of the sea's surface, used as a standard reference point for measuring altitudes and depths on Earth
:
•
Mount Everest is 8,848 meters above sea level.
Mount Everest ligt 8.848 meter boven zeeniveau.
•
Many coastal cities are threatened by rising sea levels.
Veel kuststeden worden bedreigd door stijgende zeeniveaus.