越前クラゲ or Nomura's Jellyfish
Last year the Sea of Japan came under invasion. Scores of these huge jellyfish, sometimes cited as the second largest in the world, were swept into Japanese waters having bred in great numbers in waters around China and Korea. Only identified relatively recently as a new species, they're causing havoc to Japanese fishing boats, tangling nets and in once case, causing a 10-ton fishing vessel to capsize.
But if you're worried about taking a swim with a monster jelly the size of a refrigerator and weighing up to 300 pounds (that's the same as your average sumo wrestler), you can relax; their sting is unpleasant but by no means fatal and more importantly, some clever school children have come up with a tasty solution.
You'd be forgiven for thinking of sushi, but the students of Obama Fisheries High school are using jellyfish powder to make confectionary, mostly caramel and cookies. And if that wasn't mind-boggling enough, astronauts in space could be pitching in if the caramels are put on the menu.
Nomura's jellyfish - Wikipedia, the free encyclopedia
Japanese Fight Giant Jellyfish Invasion With Jellyfish-Infused Space Candy | Sustainability | Fast Company