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.