What happens inside a pupa?

Ever wondered what happens inside a pupa?

I know we have done a Fun Fact about this before but this web site has 3D scans of the changes that go on inside the pupa.

It’s pretty cool, so make sure you check it out!

Web site and photo courtesy of http://phenomena.nationalgeographic.com/2013/05/14/3-d-scans-caterpillars-transforming-butterflies-metamorphosis/