What do you get when you combine overfishing with large-scale nutrient runoff from industrial farms into rivers and the sea? Plagues of jellyfish:
The Namibian coast, for instance, used to be â€œhugely productive in fish,â€ [UBC fisheries graduate student Lucas Brotz] says, â€œand now it is entirely dominated by jellyfish. Things appear to be going that way in the Middle East, South Pacific, the Gulf of Mexico and the Mediterranean.â€
This is what unlimited fishing with ever-better gear inevitably produces – short term profits for a few years followed by severely degraded ecosystems indefinitely.