Leftwich at the Zoo Observing Sea Lions

Leftwich and her team have spent hours filming captive sea lions at Smithsonian’s National Zoo, trying to get clear video footage of the animals clapping so they can examine the way their flippers move from frame to frame. 
(William Atkins / George Washington University)

Leftwich and her team have spent hours filming captive sea lions at Smithsonian’s National Zoo, trying to get clear video footage of the animals clapping so they can examine the way their flippers move from frame to frame.