The Marine Biophysics Unit examines how ocean currents affect the marine life of hydrothermal vents and coral reefs around Okinawa. Using buoy deployments, population genetics, computer modeling, remotely and wave-operated vehicles, and physical oceanographic measurements, the unit is mapping the Kuroshio current circulation, tracking larval dispersal, hunting for the source of an invasive coral-eating sea star, and monitoring plankton health.