The regions of light and unpredictable winds about 30 north and south latitudes are called?

The regions of light and unpredictable winds located about 30 degrees north and south latitudes are known as the "horse latitudes." These areas are characterized by calm winds and clear skies, often leading to the formation of high-pressure systems. Historically, they were named because ships would often become stranded in these regions due to lack of wind, leading sailors to throw horses overboard to conserve water.