Jelly Invaders

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by Mossrage
Last updated 6 years ago

Discipline:
Science
Subject:
Animals
Grade:
12

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Jelly Invaders

Swarms of moon jellyfish occur at regular intervals on Sweden’s three nuclear power plants,” says Torbjörn Larsson, a spokesperson for E.ON, which owns Oskarshamn. These blooms are increasing in intensity, frequency, or duration, says Lucas Brotz, a jellyfish expert at the University of British Columbia. The more these jellyfish keep blooming, the more the moon jellies will take over more of our resources!!!

Throngs of jellyfish have disrupted power generation everywhere from Muscat to Maryland, from South Korea to Scotland. Things are worse in the fishing business, where blooms have wiped out billions of dollars in earnings over the last few decades. They’re also a nightmare for fishermen, who must contend with bursted nets and clogged trawl lines. This means that many of fishermen and country's are losing tons of money do to these evil envaders. Japan’s now-annual bloom of Nomura jellyfish, which each grow to be the size of large refrigerator, capsized and sank a 10-ton trawler when the fishermen tried to haul up a net full of them. The comb jellyfish wiped out the Black Sea’s $350 million fishing industry.

In 2006 in the U.S., for over two weeks, jellyfish clogged a nuclear plant's cooling water intake three times, forcing a 60% output reduction in one of the reactors.

THERE TAKING OVER!!!

In Hawaii there have been times that 800 or 1,000 people have been stung inIn Hawaii there have been times that 800 or 1,000 people have been stung in a day. In Spain or Florida, it's not uncommon in recent years for a half a million people to be stung during an outbreak.

JELLY INVADERS

THE FISHING INDUSTRY

ENEMY #1

WANTED: COMB JELLYFISH

TOURISM

A pileup of a million jellyfish along a 300 kilometer (186 miles) swath of Mediterranean coastline shortened swimming season for hundreds of thousands of tourists on beach holidays, reports The Guardian. Some 150,000 people are now treated for jellyfish stings in the Mediterranean each summer.

WHY THEY'RE DEADLY

They create polyps—little bundles of clones—that attach to hard surfaces and wait for their opportunity to release small jellyfish. However, while they’re waiting, polyps clone themselves, creating more bundles of future baby jellyfish.

THEY'RE ALMOST INVINCIBLE!!! Cutting some species open actually creates exponentially more of them. When the cells of one species, named the Benjamin Button jellyfish, are released through post-mortem decomposition, they somehow find each other again and from a whole new polyp. AND THEY DON'T HAVE MANY NATURAL PREDATORS!!!

HUMANS ARE AT FAULT?

Yes. Thanks to overfishing, pollution and other factors, though, “jellyfish populations are exploding into superabundances and exploiting these changes in ways that we could never have imagined… and in some cases driving them,” explains biologist Lisa-Ann Gershwin in her brilliant book “Stung! On Jellyfish Blooms and the Future of the Ocean,”. Another factor is overfishing. Overfishing creates more opportunity for jellyfish to feed and breed. The plundering of, say, salmon removes one of the jellyfish’s few predators. Without a curb on their population, growing hordes of jellyfish start eating the eggs of smaller fish, as well as their food supply. "Dead zones" created by what scientists call “eutrophication”, reduces the amount of oxygen in the water. Since Jellyfish don't need a lot of oxygen to survive, jellyfish colonies expand. A few centuries ago, the hard surfaces available for polyps to cling to included mainly seabed rocks and oyster shells; those polyps that couldn’t find such surfaces couldn’t clone. Thanks to the proliferation of human structures, the world is now their oyster shell. Piers, drilling platforms, plastic cigarette packets, offshore wind turbines, boats—those are just a few of the new surfaces polyps can cling to.

$350,000,000


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