Jellyfish killing machine could seriously backfire

Recall a few days ago in “Remains of the day”, we linked to a story about jellyfish clogging a nuclear power plant intake in Sweden. Well, proliferation of jellies is a problem. There is a problematic solution…

Jelly killing machine tested in Korea | Deep Sea News.

Jellies recently shut down a nuclear reactor. They’re breaking fishing nets. Killing swimmers. Causing problems. But they’re causing problems because we’ve caused problems. The environment is changing on so many fronts that only some species are able to keep up. Some jelly populations are benefiting from our failures.

Now there is a jelly-killing machine. It sucks up the jellies and shreds them. But this is probably not going to work and this post tells us why:

Where does all that dead jelly go? It continues to float around, rotting. Maybe it will sink, smothering the seafloor. Maybe it will wash onto beaches, through net barriers, where disembodied tentacles will sting tourists. The point is, it’s going to go somewhere, and none of the options are good.

Also, some species are too tough to be shredded and will just gum up and clog the system. Finally: When you cut open some jellies, you get artificial fertilization. That means huge volumes of sperm and eggs released all at once! Guess what? More jellies. Backfire.

The author of this piece, a fan of jellyfish, likes a plan to harvesting whole jellies, remove the salt, and turn them to mulch to fertilize rice fields. Sure jellies die but they have a purpose.

Moon jellyfish

Moon jellyfish

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  3 comments for “Jellyfish killing machine could seriously backfire

  1. Johnnycakes
    October 4, 2013 at 3:50 AM

    I like jellies (except when they’re sketchy).

  2. Brian
    October 4, 2013 at 8:34 AM

    Or use them as food. yes. Food. They sell them in some oriental stores, and I had jellyfish with ham in Hong Kong in the 90s.

  3. Scott Huard
    October 4, 2013 at 1:15 PM

    Lessee….jellyfish increase…means there is a food for jellyfish increase…kill off the jellys….more of the food increases…SOMETHING ELSE will come along and start to eat what the jellys eat….or….the food that the jellys eat will clog up the cooling thingys on the reactors…we have to start LIVING WITH our environment…instead of TRYING TO RUN IT…..please take notes from native Americans….

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