Rapid growth in jellyfish populations is causing hundreds of millions of dollars in damage in some parts of the world, and has sometimes brought nuclear power plants close to meltdown, according to a Ph.D researcher at the University of British Columbia. “In some places, it’s clogging fishing nets and damaging fishing gear. In other places, jellyfish are clogging the intake pipes [that bring cooling water to] power plants,” Lucas Brotz told CBC. “In many places, we’ve actually seen ecosystems switch from being dominated by fish to being dominated by jellyfish.”
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