A sea otter named Corky on the day he arrived at the Vancouver Aquarium Marine Mammal Rescue Centre.
The Vancouver Aquarium say veterinarians have made medical history by removing a kidney and performing a blood transfusion on a sick sea otter.
Corky the sea otter was suffering from a fractured rib and other injuries when he was rescued in August near Tofino, B.C.
He was brought to Vancouver, where tests showed one of his kidney had likely ruptured.
Since the aquarium's head veterinarian was away, officials called in surgical assistance from Seattle.
The aquarium says the veterinary team performed what's believed to be the first kidney removal and transfusion on a sea otter.
Corky's prognosis is now guarded, as he is critical condition and under 24-hour care.