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Fluid-trap version 3. (a) Schematic drawing of the hydrothermal-fluid-trap design and the configuration on the front basket of the ROV. LVBS: large volume bag sampler; MVBS: medium volume bag sampler (on the back basket). P: positive displacement primary pump; O2: Optode oxygen sensor; T: temperature sensor; F: flow sensor. (b) Seafloor gastight sampling photo; (c) Large Volume Bag Sampler next to the fluid-trap.
