Hundreds of fishing fleets that go ‘dark’ suspected of illegal hunting, study finds

Vessels primarily from China switch off their tracking beacons to evade detection while they engage in possible illegal fishing

Giant distant-water fishing fleets, primarily from China, are switching off their tracking beacons to evade detection while they engage in a possibly illegal hunt for squid and other lucrative species on the very edge of Argentina's extensive fishing grounds, according to a new study by Oceana, an international NGO dedicated to ocean conservation.

Related: Cat and mouse on the high seas: on the trail of China's vast squid fleet