The wonder of animal movement – from the tiniest of insects to the largest fish in the sea – has been a subject of mystery for ages. But when it comes to animal propulsion, there are almost infinite kinds, but also limits that can’t be pushed or breakdowns will occur, according to an unusual study from a team that includes a Texas A&M University at Galveston researcher. 
 
 Nathan Johnson, a graduate student at Texas A&M-Galveston who also teaches in the marine biology department, and colleagues from Harvard, California Institute of Technology, Providence College, Indiana University and the Woods Hole Oceanographic Institute have studied the complex ways animal movements have evolved over millions of years and through hundreds of species. Their findings have been published in the current issue of Nature Communications. 
 
 The team narrowed animal subjects down to 59 species for the study, and concentrated on ways each one is able to propel itself – through air, land or water. 
 
 The key word appears to be “bend.” One common trait they found was each creature being able to “bend” its means of propulsion, but only to a certain point. 
 
 “If you take the wing of a bird or a bat, or the fins on a fish or a manta ray, you find that their means of propulsion are flexible,” Johnson explains. “They can move back or forth or sideways easily, or they bend. But this bending and flexibility will only go so far, and it can’t bend any more. 
 
 “For example, the fixed wing on an airplane is not flexible, while nature has had millions of years to figure out the best way to do it better than we can. So we wanted to see if there any patterns to this flexibility. 
 
 “For most creatures, there is a certain angle that these propulsion devices will reach and won’t exceed. It’s not that they probably can’t exceed these angles, but rather doing so is just not energetically efficient for them.. 
 
 “There does seem to be a universal range of movement in the species we looked at, from the fruit fly to the humpback whale.” 
 
 The team found that a 30 to 60-degree angle seems to be the magic range of how far animal propulsion can bend. “This appears to be especially true with bird wings, while insect wings typically bend slightly less than other organisms we looked at,” Johnson adds. 
 
 Also, the researchers agreed that environmental factors could be a factor in the range of movement. And some species move almost identically to vastly different species; they found that much of the motion made by marine life is almost identical to that of birds – that is, the fin of a fish moves just like the wing of a bird. 
 
 “We need to understand a lot of these motion patterns in much more detail,” Johnson says. 
 
 “There are some current day tests being done with man-made materials to see if they can duplicate animal motion, such as some being done with jellyfish. The more we learn about animal propulsion and the way it’s been developed over millions of years of evolution, the more it can help us with human engineering and how we can improve our own movement.” 
 
 The project was funded by the National Science Foundation. 
 
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 Media contact: Keith Randall, News & Information Services, at (979) 845-4644 or Nathan Johnson ||||| A&M; study finds magic formula of physics moves every kind of animal on earth 
 
 
 
 
 
 
 
 
 
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 A magic formula of physics is propelling animals across the planet, from birds and sharks to jellyfish, according to a new discovery by researchers at Texas A&M Univeristy. 
 
 While people struggle with fixed-wing aircraft and solid propellors, animals triumph with flexible wings, fins and tails and now we know that despite their other vastly differing characteristics, they are all moving in essentially the same way. 
 
 "We found insects, birds, bats, whales, fish, dolphins, even smaller molluscs are all using the same basic mechanics," said Marine Biologist Nathan Johnson from A&M at Galveston who did the study with colleagues from Harvard, California Institute of Technology, Indiana University and the Woods Hole Oceanographic Institute. 
 
 It shows just how advanced Mother Nature's designs are compared to human engineering. Scientists hope their findings will help technology catch up with millions of years of evolution. 
 
 They found that the animals all flex their wing, tail or fin within a "magic range" of 30 to 60 degrees, and they all bend just 30% of whatever their relevant propulsor is. 
 
 Sounds obvious, but it's something humans have yet to replicate by relying only on stiff wings for aircrafts and similar non-flexible propellors for boats. Thus missing out on nature's discovery of a potentially perfect universal design. 
 
 "The best reason we can think that these similarities are there in nature is that they are the most energy efficient," said Johnson. 
 
 The hope is that now we do know more about how animals are moving we could revolutionise our designs. 
 
 "Until now, we have been able to observe animals using flexible wings or fins but we haven't known anything about how flexible a successful wing might need to be," Johnson said. 
 
 Efforts to replicate jellyfish movements in robotics have already been started, according to A&M. 
 
 "The goal is to make it easier than it was before to work out how designs should function," said Johnson. "So this research can be used in future designs."
– When it comes to movement, human engineering has much to learn from Mother Nature, says a new study in Nature Communications. Researchers found that animals of all kinds use the same essential mechanics to move whether on land, air, or water, reports the Houston Chronicle, which likens it to a "magic formula." In other words, "the fin of a fish moves just like the wing of a bird," explains Texas A&M's Tamu Times. And it's no accident: "The best reason we can think that these similarities are there in nature is that they are the most energy efficient," says an A&M researcher. The team looked at everything from insects to birds to whales to fish to molluscs, and found that the secret is in their flexible wings, fins, and tails. It's all about the bend, which always falls into a range of 30% to 60%. It's not that they can't bend further, it's that it doesn't make aerodynamic sense. Compared with how we get around on our man-made contraptions, animals show "a potentially perfect universal design," the Chronicle notes—and scientists hope they can steal some wisdom to help technology catch up. Maybe someday, then, fixed-wing aircraft will be replaced by planes with bendable wings. (Elsewhere in the animal kingdom, researchers found that your dog really does know when you're happy.)