The mystery of the vanishing seals


If you’ve ever been to San Francisco, you probably realize why this image is so haunting. It’s the “world famous Pier 39,” where sea lions have been a tourist attraction since they arrived after the big earthquake in 1989.

Suddenly — and no one seems to know why — they’re gone.

Here’s a live Web cam if you’d like to watch for their return.

Environmental experts say the weather in San Francisco has been normal, and there seems to be no change in the bay itself.

(h/t: Andy Carvin, NPR)