Piranhas are among the deadliest creatures in the water, with sharp razors capable of cutting flesh easily, but fish in the Amazon River basin have developed a "bulletproof vest" to prevent the nasty bite of piranhas.  Researchers have described for the first time in detail the armor on a freshwater fish known as Arapaima gigas . The fish has a strong, though flexible, inner layer bound to collagen to mineralize the outer layer of the flakes. In addition, A. gigas can weigh over 300 pounds (150 kilograms) and exceed 10 feet in length.
"Likewise, body armor is made of several layers of flexible tape sealed between layers of hard plastic," said a statement describing the findings. "But man-made materials are bonded to third-party adhesive material, while fish flakes are bonded at an atomistic level; they grow together, weaving together into one solid piece."
RESEARCHERS TO EXCLUDE TEETH OF PIRANH AFTER COMFORTABLE OPENING. of the study's co-authors, Robert Ritchie, in the statement. "When nature binds solid material to soft material, it classifies it, preventing this shaking effect. In this case, the binding structure is mineralized collagen."
"It is true that natural armor is similar to artificial body armor because of such a system of overlapping scales. However, natural armor such as these fish flakes is difficult and much lighter, without impeding body flexibility and locomotion. ", Said the study's lead author, Wang Young, in an interview with Reuters.
Researchers say the strength of the surface layer of fish" shows [s] that they are among the most difficult of nature's flexible biological materials, "according to a summary of the study.
"Remember that fish flakes were developed over hundreds of millions of years," Jan continued. They are very advanced. "
The study was published in the scientific journal Matter and supported by the US Air Force Service
A separate study published in August looked at how piranhas, which are omnivorous, are able to regenerate rows of teeth at the same time. Teeth are also interconnected, which makes them act as a whole, the researchers reveal.  Click here to get the application of FOX NEWS