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Hello, this is the Creature Encyclopedia. Today, we have prepared a really, really rare video. Among the native crayfish in Korea, a mutant crayfish with a blue coloration is very rarely found. Blue crayfish appear in various patterns, from a sadly blue individual to the perfect blue color shown in the video. In fact, because they are so rare, they are not something you can find even if you really look for them. I have been looking for blue crayfish for the past two years, and last year I found out about their habitat and visited, but I had to give up on making the video because all the crayfish were killed, probably due to pesticides. Thank you so much, YouTuber Daheuk kindly invited me, saying he had received a tip, and I was able to have an invaluable experience.