A robot fish is helping the Navy improve underwater movement

Oscar Curet is an assistant professor at Florida Atlantic University. For the past couple of years, he's studied the movement of the Knifefish, an animal native to the Amazon River, that uses a long ribbon fin to propel itself through the water and navigate its complex environment. 
"As a engineer, we try to solve problems, and nature has solved some of the problems that we are facing, and one of them is mobility," Curet said.
Curet, along with other researchers from Florida Atlantic Unive