Aggelos Mallios watches as Woods Hole Oceanographic Institution senior research assistant Joanne Goudreau collects water samples from Niskin bottles attached to Thetis. Goudreau will analyze water samples on a gas chromatograph, complementing readings from Dr. Camilli's Gemini in-situ mass spectrometer. Image courtesy of Project PHAEDRA 2006, WHOI, HCMR, Thera Foundation, NOAA.
