A girl is snorkeling 1 meter below sea level and then dives down another 0.5 meters how far below sea level is the girl?

The girl starts at 1 meter below sea level and then dives down an additional 0.5 meters. To find her total depth, you simply add the two depths together: 1 meter + 0.5 meters = 1.5 meters. Therefore, the girl is 1.5 meters below sea level.