A quarter century after its creation, the Monterey Bay National Marine Sanctuary has become one of the world’s largest outdoor laboratories, with teams of scientists spread across thousands of square miles of ocean studying everything from humpback whales to bone-eating worms that live on carcasses at the bottom of the sea. Known to marine biologists as the “Serengeti of the Sea,” the Monterey sanctuary is a wonderland of screeching seabirds, frolicking sea otters, breaching whales, great white sharks and giant sea turtles.