제 목    yLQEdbxMxYqgNpWcsi 이 름    Sheldon 날 짜    2018/06/28 조 회    1 I've lost my bank card best drugstore mascara july 2013 A bottlenose dolphin named Tanner was blindfolded and instructed to mimic the actions of a trainer in the water with him. When Tanner wasn't able to use sight to figure out the movement, he switched to another technique: emit sounds, listen to the echo and interpret the resulting sound waves. This ability – known as echolocation – allowed Tanner to replicate movements by the trainer, such as spinning in the water.