As Far as Ice Allows
How far can the whales go before ice stops them? Gray whales can only swim farther north after the ice is gone. They usually don't reach Point Hope, Alaska until July! We can look at changes in the Bering Sea ice maps to help predict when the gray whales will arrive. Most people look at the ice maps from remote, tiny villages, or from cozy homes or offices far away. You can, too:

Map of sea ice.