Peter Vrolijk, Retired, Washington, DC, United States; New Mexico Institute of Mining and Technology, Socorro, NM, United States, Lori L Summa, Rice University, Houston, TX, United States, Paraskevi Nomikou, National and Kapodistrian University of Athens, Athens, Greece, Richard Camilli, Woods Hole Oceanographic Inst, Woods Hole, MA, United States and Falkor 101218 Science Team, R/V Falkor, Schmidt Ocean Institute, Palo Alto, United States