Zoom in on sea ice

Time for some adventure! We're going to take an exciting journey through the sea ice. We'll start by flying 20,000 m up in the air. As you zoom in closer and closer, we'll come crashing down to the surface of the ice. We won't stop there, though; you'll even get to go inside the ice. Usually, only scientists with high-tech equipment get to see the ice this closely. To continue your adventure, read the caption and then choose your destination.

This picture is 1 m across. The picture was taken by a camera. It shows an ice core, which is a round piece of sea ice, that is removed from the ice with a special kind of drill. You've probably looked at ice this closely before. Now, our real adventure begins, as we go into the ice...