A B.C. woman has been attacked and critically injured by a cougar.

A spokesman with the Rescue Co-ordination Centre says the incident happened late Sunday afternoon on Flores Island in Clayoquot Sound, about 20 kilometres northwest of Tofino.

He says the 60-year-old victim, who lives on the remote island, was attacked from behind by the big cat.

A medevac helicopter could not reach the site because of poor weather so coast guard members stationed in Tofino rushed to the scene to transport the woman to Tofino by boat.

She was then airlifted to hospital elsewhere on Vancouver Island.

There's no word on her condition, but rescue officials say the woman's husband fought off the cougar and injured it, forcing it to retreat into the bush.