CANNON BEACH, Ore. -- Shark warning signs will be posted north of Cannon Beach after a Portland man was bitten Monday afternoon while surfing.

Joseph Tanner, 29, was bitten on his upper and lower thigh at about 4 p.m. Monday off of Indian Beach at Ecola State Park. The shark pulled Tanner off his surfboard and he swam to shore, according to police.

He was flown to Legacy Emanuel hospital in Portland with serious injuries.

Background: Surfer bitten by shark on Oregon Coast

Signs reading "Warning: Shark Sighting" will be posted Tuesday at Indian Beach and within the state park, said Chris Havel with the Oregon Parks and Recreation Department. The park and beach will remain open.

People off of Oregon's coast have only reported being injured by sharks three times in the last 10 years, according to

"While the Oregon Parks and Recreation Department isn't involved in managing recreation offshore, it does post information about wildlife encounters," Havel said. "As a natural, wild place, people coming to the Oregon coast can prepare themselves to enjoy the ocean shore by visiting For people using the ocean offshore, especially surfers, the Oregon Parks and Recreation Department recommends consulting fellow surfers."