Heroes star Hayden Panettiere is a serious animal lover.

In her free time she has become quite an activist, shooting documentaries about dolphins and whales.

 In her latest project for the Whaleman Foundation in Sydney Australia, fearless Hayden went swimming with some sharks in an aquarium, what a brave girl!





 Related articles:

Hayden Panettiere Knows a Secret!

Does Hayden Panettiere Need Another Hero?

Everyone wants a piece of Hayden Panettiere!

Hayden Panettiere Freaks Out On Red Carpet!