at sea level

At the same level as the ocean. A lot of people struggle to breathe when not at sea level.

at sea level

at the level of the surface of the ocean. It is easier to breathe at sea level than in the mountains. Boats on the ocean are at sea level, but those on rivers are not.

Common Names:

Name	Pronounced	Usage
Tovia	-	Hebrew
Keren Happukh	-	Biblical Hebrew
Fu	-	Chinese
Raven	['rævən]
Marcela	mahr-THE-lah (Spanish), mahr-SE-lah (Latin American Spanish), mahr-TSE-lah (Polish), mahr-CHE-lah (Romanian), MAHR-tse-lah (Czech)	Spanish, Polish, Romanian, Czech
Pomponius	-	Ancient Roman