Overfishing is when fish are caught faster than they can reproduce, and it's not just a minor problem, it can cause fish to be extinct and we eat fish, so less fish is less food. This will also make more animals starve to death, because some animals eat fish, and overfishing is not helpful in these situations. The Mediterranean Sea is the most overfished in the world, with 62% of its fish stocks now overfished, 62 percent is more than half! And it will probably get even worse too!