Mary Agnes DeChriste Taylor of Charleston had no idea that her mother, Rose, ever worked in a Bluffton oyster factory -- or that her serious expression as a 7-year-old helped end child labor.

She demonstrated her impressive oyster-shucking skills in a video shared by the Oregon Zoo. "What's crackin, Sushi," tweeted the zoo. Uni Sushi moved to her new home in Portland after she was ...