While the cause of the rising jellyfish population is unclear, scientists have suggested global warming might be to blame. But as with other alleged impacts of global warming, the harms are accompanied by some potential benefits:
South Korean fishermen have been suffering similar woes, but China, where giant jellyfish are a delicacy often served dried and dressed with sesame oil, does not seem to have registered the outbreak as a major problem, Japanese officials said.David Friedman’s recent post on offsetting positive and negative externalities seems relevant.
Seaside communities in Japan have tried to capitalize on the menace by developing novel jellyfish dishes, ranging from tofu to ice cream, but for some reason the recipes have failed to take off.
Participants at the conference said they had experimented with feeding the jellyfish to farmed crabs and using them as fertilizer.