Why is an upwelling important to fishermen?

Upwelling is an important phenomenon for fishermen because it brings nutrient-rich waters from the deep ocean to the surface, creating an environment that is ideal for the growth of phytoplankton, which are microscopic plants that form the base of the marine food chain. The abundance of phytoplankton attracts zooplankton, small animals that feed on phytoplankton, and subsequently larger fish that feed on zooplankton. Additionally, upwelling can bring fish eggs and larvae closer to the surface, increasing the survival rates of these young fish and contributing to the overall health and sustainability of fish populations.