This video was taken in Papua, Indonesia. We saw it happen five or six times before we finally managed to capture it on video. The horsehair worms infect the prey and modify the brain chemistry in such a way that when the parasite is ready to emerge, the victim commits suicide in water. The worm then emerges, lays eggs in the water, and the circle of life continues. Read the wikipedia article on Nematomorpha for more information.
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