After years of theories, a document has surfaced that explains the mystery of the tiger snakes on Carnac Island.

6PR’s Breakfast hosts Millsy and Mick were fascinated to speak to Dr Mitchell Ladyman, animal plant and mineral biologist, and find out why there are close to 400 tiger snakes on the small nature reserve.

“Everyone thought that they knew the answer, but nobody could really conclusively prove it.”

Click PLAY to hear the story behind the snakes.

Image: 9News