A Western Australian teen coolly rode his bike home and made breakfast after being bitten by a shark today.

Cameron Pearman, 13, was surfing with his cousin at Port Bouvard Beach near Mandurah when he was bitten by the approximately 2m-long shark around 6am (AWST) today.

He suffered minor puncture wounds to his leg in the attack.

He rode home around 2km and made his breakfast before being taken to hospital by his father.

“I had some raisin toast, it was good,” he said.

“Dad was home, he didn’t believe me when I casually said ‘I got bitten by a shark’.”

Cameron Pearman suffered puncture wounds to his leg in the attack. (Facebook) (9NEWS)

It was Mr Pearman’s first time back in the water after breaking his wrist three weeks ago.

He had just paddled out and was yet to catch a wave when he was bitten.

“I was sitting out the back waiting for a wave and something hit me from behind and knocked me off my board,” he said.

“It came up underneath me and bit my leg.”

He said he was mostly disappointed in the damage to his wetsuit and planned to get back in the water tomorrow.