"Big Blue Live" (PBS, Monday through Wednesday). A three-night television event, broadcast live from the Monterey Bay National Marine Sanctuary in Northern California. Due to certain oceanic conditions, a whole lot of lunch predictably will be swimming into the bay right then, with hungry whales, dolphins, sea lions, elephant seals, sea otters, great white sharks and pelicans following after; it's like a Coachella of the Sea. One wonders how reliably the wildlife will hit its marks, but that's the peril and pleasure of live TV for you. In a more dystopian society, you might be asked to vote on which species would go through to the next round; the purpose here is to enlighten, to cultivate an appreciation of biological diversity and ecological interdependence in that most dangerous species — humans, you know what I'm talking about.