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Japan Mountain Leech vs. Giant Earthworm

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Uploaded by on Jun 27, 2007

While hiking in rugged mountains of the Japan Southern Alps I happened upon a life and death struggle between a very large earthworm and an equally large Japanese Mountain Leech. This was my first leech encounter in Japan and at the time I knew little about this interesting animal. The Japanese Mountain Leech is called yama-biru in Japanese and is known scientifically as Haemadipsa zeylanica japonica. Mountain Leech are quite at home outside of water and are most often found within dark, moist forests. The animal is especially active during the monsoonal rainy season (when I took this video). Blood sucking leech will readily go after farmers and hikers and will eagerly pursue their prey using a strange form of locomotion in which they toss their bodies end over end in rapid pursuit. They can chew right through socks and are quite relentless in their efforts to get a blood meal. Leeches are even known to drop from trees upon unsuspecting passersby! While some Mountain Leech have mouths designed for sucking, others (like the leech in this video) must swallow their prey whole.

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Top Comments

  • Unfortunately the massive amount of views this video has recieved are not only a blessing, but a curse as well. With this many views, the immature are bound to make unintelligent comments.

  • if you cut a worm in half, then you get two seperate worms right? so cut the worm in half, so it can survive, and the leech gets a meal! its a win-win

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  • the worm must be like WHAT THE HELL "BEUTIFUL ORANGE" SAVE ME YOU STUPID HUMAN!!!.....just wait a huge battler suit is gonna fall out from the sky and land on the worm...then he will come for you for revenge!!!!

  • Akihiro-san, you are very brave to pick up a leech that size, even if its mouth was full.

  • @tinkytina123 No, the worm will die slowly and in agony.

  • @tinkytina123 your wrong... they wont live

  • @tinkytina123 Actually I think the worm would just die a slow and painful death, but if it could survive it wouldn't be a bad idea.

  • ew.

  • STOP IT.

    IT PAINS.

  • dafuq

  • Thats freaking disgusting

  • @tinkytina123 maybe the leech is just sucking out the worms insides instead of eating it D: so the whole worm dies

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