This abandoned Sea Otter pup was rescued when her cries were heard by a person walking on a beach in California who then called marine officials.  She weighed just 2 pounds and was estimated to be only a week old when she was found.

This "is tiny for a newborn sea otter, and she had been separated from mom for at least 16 hours," Karl Mayer, animal care coordinator for the Sea Otter Program, said in a news release. "This meant it was critical that we begin to get calories into her as quickly as possible."

Currently called Pup 681 and weighing just under 6 pounds, the newborn otter requires constant care as sea otter pups stay with their mothers until they're 8 months old . The Shedd Aquarium, Chicago is one of the few U.S. facilities with the available space, staff and experience to provide appropriate care her.

"It truly takes a village to rehabilitate a young sea otter," said Tim Binder, Shedd’s vice president of animal collections. "Our animal care team is teaching the pup how to be an otter." Watch this video on CNN.com to see her swimming.

California Sea Otters are on the threatened species list.