Jellyfishes the size of sumo wrestlers are creating new problems for the Japanese fishing community. "It's a terrible problem. They're like aliens," says Noriyuki Kani of the fisheries federation in Toyama, northwest of Tokyo

CNN reports:

A slimy jellyfish weighing as much as a sumo wrestler has Japan's fishing industry in the grip of its poisonous tentacles.

Vast numbers of Echizen kurage, or Nomura's jellyfish, have appeared around Japan's coast since July, clogging and ripping fishing nets and forcing fishermen to spend hours hacking them apart before bringing home their reduced catches.