An ocean lover who took to South Australian waters over the weekend unwittingly spent more than 10 minutes with one of the ocean's apex predators – a "curious" great white shark.

Andy Burnell, an avid photographer who works with the Department for Environment and Water, took to his kayak on Sunday to test out how to film "fly-overs" in the murky waters off Grange Beach.

It was only when he downloaded the footage from his old GoPro at home he realised he wasn't alone.

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"I had no idea, I was in absolute amazement," Burnell told 9news.com.au.

"I was expecting nothing, and I was like, 'Oh, that is a shark.'

"It swam right across the frame.

"She was obviously really curious and wanted to see what the thing bouncing in the water was. There was no bait.

"She came back multiple times over the course of 10 minutes."

Burnell believes his fishy friend was a female juvenile white shark.

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Close-ups captured by his camera shows she may have run into other sharks in the past.

"On the left-hand side there's a semi-circle row of what looks like teeth marks, and on her right fin there's bit taken off," Burnell said.

"Someone suggested they're mating scars but I'm not sure as she is so small."

Burnell has sent the shark footage off in hopes of having the animal identified.

If it's proved she's an unknown visitor to our waters, he wants to name her "Amber" after Amber Bourke, an Australian free diver.

"She was just competing in Turkey and she got a silver medal in the free fins category, and dove 65 metres deep.

"So I thought free fin, no fin.

"She was a very distinctive shark".