Overfishing significantly impacts marine ecosystems by disrupting the balance of fish populations and the overall health of the ocean. When dominant fish species are removed, it can lead to a cascade of effects on the marine food web, causing overpopulation of smaller fish and changes in predator-prey relationships. Additionally, overfishing threatens biodiversity and can result in the collapse of certain fish stocks, leading to diminished resources for communities that rely on fishing for their livelihoods. The ecological balance is essential for maintaining healthy marine environments, and overfishing jeopardizes this stability.