Pacific coastline flooded with 'sea pickles'

There's lots of curious creatures in the world's oceans -- and we got a stunning glimpse at some of the most mysterious ones very recently -- but most of the time they keep to themselves, zipping around the depths or floating listlessly on the sea floor. Now, beaches along the Pacific coast are being invaded with a curious creature that, while harmless, is creating something of a scene. They're "sea pickles," and they're definitely not what you want to see when you're about to soak up some sun o...