The adult male sea otter has been named Quinault, after the Washington-state Indian nation were he was found on July 9.
The severely malnourished mammal received emergency care until he could be moved, then he was sent to Vancouver Aquarium.
Veterinarian Chelsea Anderson says Quinault's flippers were badly swollen when he was found on the beach and he was unable to even get in and out of a small pool on his own.
He's now able to get in and out of his pool at the Aquarium's Marine Rescue Centre, but staff still have to monitor him around the clock, and Anderson says the otter has a long road ahead to recovery.
Once common across the Pacific rim from northern Japan to Baja, California, sea otters were hunted near to extinction during the fur trade and they are listed as a species of special concern in Canada.