Robotics Sea Snake

Amphibious snake-like robot "ACM-R5"

Developed by the Hirose Lab at the Tokyo Institute of Technology, his amphibious robotic snake moves with surprisingly natural movements on both land and underwater. The robotic snake is not quite small enough to crawl through smaller plumbing pipes. Its main body is 80mm in diameter without the fins, and has a total length of 1.75m. Interestingly it looks like it uses regular hobby servos for its joint actuators, perhaps they are using the high torque versions.

[From: Fuji Sankei Business i.]