SYDNEY — A shark bit a terrified surfer’s board today near the Australian coastal town where another surfer was mauled a day earlier, police said.

The 52-year-old surfer was not injured when the shark bit his board, leaving teeth marks in the fiberglass, while surfing off Lennox Head, 350 miles north of Sydney, a police statement said.

The surfer, who has not been named, was sitting on the board when the shark knocked him off, said Garry Meredith, a life guard at Lennox Head.

Another surfer Matt Lee, 32, remained in a critical condition at Gold Coast University Hospital today after a shark seriously injured both his legs off Lighthouse Beach, 6 miles south of Lennox Head at the tourist town of Ballina.