The Alaska SeaLife Center in Seward says in a release that the male calf is estimated to be 4 to 6 weeks old.
Officials report a large group of walrus floated on sea ice past Barrow on July 17, and believe this calf became separated from them. Barrow fishermen saw the calf in a lagoon.
Staff members at the Alaska SeaLife Center say the calf appears to be in good health.
It's the first walrus calf at the center since 2007. Four calves were cared for at the center between 2003 and 2007.