locomotion

Pleurocystitid was a marine organism that existed almost 450 million years ago, long before the first dinosaurs. Scientists have now built a soft-bodied robotic replica of it, which could inspire new methods of locomotion for future robots.

If a robot is trying to traverse rugged, irregular terrain, it's limited by having just one body shape. The Tetraflex robot was designed with this fact in mind, as it can change shape to adopt different modes of locomotion.

It goes without saying that it is very important for airliners' jet engines to be regularly inspected. Such inspections could soon be easier and more thorough than ever before, thanks to a robot that moves like an inchworm.

Just last week, we heard about a robotic baby sea turtle that can "swim" through the sand. It's not the only robo-turtle in town, though, as another one has been developed to possibly one day lead real baby turtles to the safety of the sea.

When baby sea turtles hatch from their buried eggs, they use their powerful flippers to make their way up through the sand. A new "sand-swimming" robot, inspired by those hatchlings, could one day save lives or even explore other planets.

While most of us may just think of krill as whale food, the tiny crustaceans are also very adept swimmers … enough so that scientists have developed a krill-inspired robotic platform in hopes of creating swarms of ocean-exploring swimming robots.

Although biped and quadruped robots may excel at traversing uneven terrain, they require multiple sensors and complex algorithms in order to do so. Scientists have now taken a "simpler" approach, by creating a robotic centipede.

When designing fish-like underwater robots, you want a means of propulsion which is both energy-efficient and reasonably speedy. A new tail-flapping system may fit the bill, paving the way for wider usage of such bots.

If you're making a small robot that can explore tight spaces, it would be good if that device could also shimmy its way through narrow gaps. An experimental new robot can do just that, by emulating a caterpillar.

In order for a soft-bodied robot to be practical, it has to be simple, light and energy-efficient, yet still reasonably quick. A newly developed mechanism fits the bill, and it's inspired by the humble hair clip.

Long before dinosaurs roamed the earth, the oceans were full of creatures known as ammonites. Scientists have now created a number of robotic ammonites, to see how the different shell shapes they evolved affected their movement through the water.

While scientists have already created tight-space-exploring robots based on snakes and cockroaches, rats are also highly adept at squeezing through narrow openings. They now have a robotic equivalent of their own, in the form of the SQuRo.