Sam Langiewicz, 18, of White Bear Lake, Minn., looks through chunks of limestone for fossils belonging to ancient sea creatures from when the area was covered with water Friday, Oct. 19, 2018, at Quarry Hill Park in Rochester. Langiewicz, who just graduated high school, said looking for fossils is just a hobby right now, but he aspires to be a paleoecologist some day. "He's been breaking rocks since he was little," said his mom Nicole Langiewicz, who was with him hiking through Quarry Hill Park.