Seal Island, Maine: Atlantic Puffin Boulders Webcam

No matter the time of day, there's almost always something happening on this webcam and on these boulders, which were thoughtfully arranged by a glacier long ago. It's where Atlantic Puffins first settled when re-introduced to the island in the 1970s, and it's now home to more than 100 nesting pairs. You can also watch the seals that give the island its name.

The cam is monitored by volunteers at Hog Island Audubon Camp, and hosted online by Explore.org.