A construction project at San Pedro High School in Los Angeles revealed nearly 9-million-year-old sea creature fossils buried under the school. Scientists believe the area was once fully underwater, which would explain the bounty of marine fossils. But students at San Pedro High School in Los Angeles got a much more up-close-and-personal experience thanks to the discovery of millions of fossils dated millions of years old underneath their campus. Milad Esfahani, a San Pedro High School student, even got in on the research at the Natural History Museum by sorting fossilized shells. “It’s the entire ecosystem from an age that’s gone,” Bischoff told LAist.