Hayley gets close to sharks!

Scientists have been getting up close to massive sharks to study their teeth.

Today's shark teeth can help the scientists learn more about pre-historic sea creatures.

We packed Hayley a wetsuit and sent her on a very dangerous mission.

She swam in the same pool as a massive shark, in order to pick up its teeth!

They were then brought back to the lab where Hayley found out why the research is so important.