SYDNEY, Australia — Australians tend to roll their eyes when the world obsesses about this country’s dangerous animal kingdom, including its deadly snakes (the deadliest in the world), its tiny and toxic redback spiders, and of course the jellyfish that cause heart attacks.

But on Monday, even the most jaded Aussies found themselves gawking over and swearing about the mysterious creatures that chewed up a Melbourne teenager’s legs.

Graphic photos of his ankles spread across social media.