"In one of our examples, once the robot lost one of its legs it discovered a new, even faster way to walk".
It's efficient because instead of using servos and actuators (or whatever they're called) to modulate every movement of its legs, it walks like we do, by using gravity and momentum to keep energy costs low.
The relative puniness of its legs meant it could not venture far onto land, and so could easily be stranded if its watery home dried out.
I coaxed it on to my hand and was immediately struck by the power of its legs as it tried to force my fingers apart.
At one point, I lost one of its legs: somebody stole it in a pub for fun, and I had to remake it.
Earlier this year, another rocket suffered a "rapid unscheduled disassembly", as Musk put it, meaning that one of its legs broke and the rocket blew up.
Attempts were made but it only blackened one of its legs a little.
Cross one of its legs over the other, giving it a relaxed look.
It isn't obsolete, but one of its legs is broken off.
A starfish is more difficult to kill than a spider, they note because each of its legs contains all the organs necessary for it to grow into a new starfish.
Experts determined it was an original but found that one of its legs had been added later presumably by the smugglers who wanted to raise its value.
