Overfishing occurs when fish are caught at a rate faster than they can reproduce. This leads to a decline in fish populations, which can disrupt entire marine ecosystems. When certain species, like cod or tuna, are overfished, it can affect other species that rely on them for food, creating an imbalance in the ocean. The consequences of overfishing extend beyond just fish populations. It can impact the livelihoods of communities that depend on fishing for their income and food. Sustainable fishing practices are essential to ensure that fish populations remain healthy and that the ocean's ecosystem continues to thrive for future generations.