New vision has emerged of the moment a dugite slithered under a woman’s towel at a northern suburbs beach - showing the alarmed sunbather using an umbrella to confirm what lay beneath her.

The snake scare, which happened at Hamersley Pool in North Beach around 11am Sunday, was filmed from a safe distance by Lisa Houlihan.

“We were just sitting there on the beach and suddenly it came sliding along past everyone and then ended up under a lady’s towel,” she explained.

“Eventually a guy went over and lifted the towel up…the snake stayed there for a while and eventually it took off.”

But footage from a new angle has since emerged which shows not only the woman’s moment of fright but also the man who fearlessly removed the towel to show the metre-long snake.

The dugite then slithers off into the dunes.

"All of a sudden we heard this lady scream – the snake had been slithering along and it somehow got underneath her towel,” said childcare educator Nicki Rocca, 20, who shot the second video.

"I was a bit shocked as I hadn't ever seen a snake in the wild like that before. It's a deadly snake so I was scared for the man moving the towel, but he did it at his own risk.

"It wouldn't put me off going to that beach, I love the beach and there are probably snakes wherever you are."

Mrs Houlihan had estimated there were about 20 people, half of them children, at the relatively secluded beach on Sunday morning when the snake was spotted.

She said she was concerned about not being able to find anyone to remove the snake.

“We all jumped up and headed to the car park. I called the ranger from the Stirling council but they said they were only able to pick up dogs and pets,” she told thewest.com.au

“They gave me the number for wildlife people and apparently they only collect snakes from households.

“You can contact a professional snake catcher but there’s a call-out fee and then it’s something like $50 per half-hour until they catch it.

“How do you work out who pays for that?”

The City of Stirling’s parks and sustainability manager Ian Hunter said the council’s trained reptile catchers were unavailable on weekends.

Mr Hunter said snake sightings at the beach were common, especially during spring and summer.

Dugites and tiger snakes are the most likely to be found at Perth beaches. Both are venomous and bites can be deadly.

“Natural areas such as coastal dunes, bushland and wetlands form part of the natural habitat for snakes,” he said.

“The occasional movement by snakes into adjacent areas that are used by the public is not unusual.”

People who see a snake are urged to back away, keep the snake in sight and try not to harm or kill them.

During business hours, anyone who sees a snake on City of Stirling land is urged to contact the council’s Natural Areas Conservation team on 9205 8555.

After hours, people are asked to contact the Wildcare Helpline on 9474 9055.