“Big Blue Live” is a three-part PBS and BBC television special about sea life in Monterey Bay. It starts tonight and runs through Wednesday. This nature show is distinguished from other nature shows by its live TV aspect. Producers hope that it will give the show a spontaneity like that that is seen on reality TV. The producer’s obvious confidence that they can take the nature show genera that typically relies upon months of recorded video and bring it to live TV is in part due to the resurgence of sea life around Monterey. Monterey Bay is an environmental success story that this series hopes to showcase. The show is timed to broadcast near the peak of the whale migration season and it will be leavened with recorded background material, but as the name implies, this series is all about live TV. We’ll be watching it, just to see what happens next.