These schools of jellyfish are now transforming many world-class fisheries and tourist destinations into veritable jellytoriums that are intermittently jammed with pulsating, gelatinous creatures. It is said that areas that are currently particularly hard-hit by these squishy animals include Hawaii, the Gulf of Mexico, the east coast of the U.S., the Bering Sea, the Mediterranean Sea, Australia, the Black Sea and other European seas, the Sea of Japan, the North Sea and Namibia.
It is found that large numbers of jellyfish have caused injuries and even occasional deaths to water enthusiasts, and have caused serious damage to fisheries, fish farms, marine mines, desalination plants, ships and nuclear power plants. From large swarms of potentially deadly, peanut-sized jellyfish in Australia to swarms of hundreds of millions of refrigerator-sized jellyfish in the Sea of Japan, suspicion is growing that population explosions of jellyfish are being generated by human activities.
According to the scientists causes of some jellyfish swarms include pollution, climate change, and introductions of non-native species, overfishing and the presence of artificial structures, such as oil and gas rigs. It is also said that the authority is working hard to prevent such invasion of jellyfish in the seas where human activities are rampant.
