Continuing to explore the Gulf of California, Pescadero Basin Expedition aims to explore the geological, biological and geochemical features of the recently discovered Pescadero Basin hydrothermal vents. From October 30 to November 6, 2017, E/V Nautilus will launch the second expedition exploring little-known regions of this region’s seafloor with Woods Hole Oceanographic Institution. Pescadero Basin is the deepest basin (3800m) along the East Pacific Rise at the southern end of the Gulf of California, hosting an array of deep-sea biological communities thriving among carbonate chimney structures, which are starkly different from more common sulfide-dominated mid-ocean ridge vents.