Researchers find abundant marine life at area once thought to be an "oceanic desert"

The video discusses the migration of sharks from California to an area between Hawaii and California, initially thought to be an oceanic desert. Scientists used a research vessel to explore this region and discovered it was actually an oasis teeming with marine life, including jellyfish, phytoplankton, squid, and fish. Marine life was observed moving vertically in the water column, known as the midwater range.

What was the initial belief about the area between Hawaii and California?

What research vessel was used to explore the oceanic area?

How did scientists describe the area they explored?

What types of marine life were found in the region?

What is the significance of the midwater range mentioned in the text?