Boo-Keun (B.K.) Khim (Sedimentologist, Pusan National University, Korea) intensely examines a core section. The sedimentologists are tasked with visually describing every core collected. They have to be quick to keep up with the cores, which arrive on deck approximately every 45 minutes when we are using the advanced piston corer (APC)! (Credit: Bill Crawford, IODP JRSO) [Photo ID: exp355_030]