Illegal, unreported and unregulated fishing

Illegal, unreported and unregulated fishing (or 'IUU fishing') is when people catch fish in ways that are against the law. This can mean they don't have a licence, they're fishing in an area where fishing is not allowed, or they're taking fish that should be left alone. It's bad for the environment because it means too many fish are being taken out of the water without being replaced, and it can also mean that other animals, like dolphins, get caught in the fishing nets or lines and are hurt.