My favorite webcam recently went live for the summer. It is the Bear Cam at Brooks Falls, Katmai NP Alaska.
Bear Cam - live from Brooks Falls in Katmai National Park | Explore.org
The salmon are starting to run and the bears are lining up for a meal. I find it fascinating to watch the fish trying to get upstream, the mama bears teaching their cubs and the older bears, who just walk up and snatch a fish right out of the water.
What other webcams do you enjoy?