Manta rays are elegantly shaped. They swim by flapping their fins like enormous wings, and their gills filter for plankton ...

That comes out to a swim speed ... or other notoriously fast fish, the researchers were instead drawn to Manta rays and, in particular, their unique “wing-like pectoral fins.” ...

It was just two years ago that a tiny robotic manta ray became the world's fastest-swimming soft-bodied ... "In other words, the faster the robot flaps its fins, the more time the air chamber ...

This study holds the potential to help researchers, engineers, and scientists develop faster and more efficient swimming soft robots that can be used ... along with demonstrating high power efficiency ...