While not quite as disturbing as the sea snake robot, the biologically inspired OctArm is compliant manipulator that can be used for a wide range of tasks.
For those of you interested in continuum robotics, this month's Journal of Mechanisms and Robotics from ASME has an interesting paper "On the Kinematics of the Octopus's Arm".
[From: IEEE Robotics & Automation Magazine YouTube Channel]
First test of targeting system.
2 hours ago