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How does upwelling off central Vietnam support marine life?

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Physical map of the East China Sea, South China Sea, and Yellow Sea, showing surrounding countries, major cities, and maritime boundaries. The map highlights sea depths with color shading, features such as the Macclesfield Bank and Philippine Trench, and includes a locator inset for regional context.
South China Sea

Upwelling off the coast of central Vietnam occurs during early summer when southwestern monsoon winds displace surface waters away from the coast. This process brings colder, nutrient-rich water from deeper layers toward the surface.1

These nutrients are essential for supporting a robust marine ecosystem, as they stimulate the rapid reproduction of phytoplankton. This surge in primary production subsequently supports the growth of grazing zooplankton, which provide a vital food source for nekton and other marine life.2

This biological productivity contributes to the overall abundance of marine life in the South China Sea, making the region a significant area for fisheries that provide essential animal protein for the surrounding populations.1