The Oregon Zoo in Portland released a video showing some sea otters shucking shellfish before a feast. Juno, Lincoln and Uni Sushi were spotted cracking open clams, oysters and mussels. See the moment. The Oregon Zoo in Portland released a video showing some sea otters shucking shellfish before a feast. Juno, Lincoln and Uni Sushi were spotted cracking open clams, oysters and mussels. See the moment.