It was exciting at first when they turned up in the delta, but now that they have come up the sacramento river then into the deep water channel, they are in my backyard ... well about a mile away from me. about 10 years ago a different whale that they named Humphrey spent a month in the same river ... so we are Excited and concerned...

http://www.sacbee.com/101/story/181134.html

Not the first time: I remember reading this as a kid "Humphrey, the Wrong Way Whale"

We had a bottlenose whale swim into the River Thames in London last year. Sadly, it suffered convulsions & died