SONOMA, Calif. (AP) — Authorities say a surfer was bitten on the leg by a shark off the Northern California coast and airlifted to a hospital.

The Bodega Bay Fire Protection District says the man was with a group of surfers off Sonoma County’s Salmon Creek Beach when the shark bit him on the thigh. His fellow surfers helped get him to shore and bystanders applied first aid until emergency crews arrived.

Authorities didn’t know what type of shark it was. A California Highway Patrol helicopter took the surfer to a hospital.

His injuries are not considered life-threatening.