Developed by the Hirose Fukushima Lab (Japan), this “snake” is quite interesting to watch when it moves underwater. It needs water resistance to propel itself. It can also move on firm ground, but I suspect that the fins make it a lot more efficient in a liquid. Each section of the ACRM-R5 has its own micro-processor, motor and battery and knows where it is in the overall body, by counting how many siblings separate it from the head, which is unique. That might mean that the snake could be very long, but most importantly, researchers can easily replace a body part. Watch the video in the full post.
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