Why is marine life especially abundant in areas of upwelling in the Gulf of Aden?

Marine life is exceptionally abundant in the Gulf of Aden due to the seasonally variable upwelling of deep waters in the coastal zone.1

This process brings a considerable supply of nutrient-rich water to the surface layer, which stimulates the rapid growth of plankton. Because these nutrients form the base of the marine food web, they support a high density and variety of species, including abundant populations of sardines and mackerel.12

The intensity and location of this upwelling are influenced by monsoon winds, which drive the circulation patterns in the region. By providing a consistent influx of essential nutrients, these upwelling events create highly productive marine ecosystems that sustain diverse life, ranging from small fish to larger predators like tuna, sharks, and whales.1342