View video footage captured by the Little Hercules ROV and camera platform during the April 20 ROV dive from NOAA Ship Okeanos Explorer during the Gulf of Mexico Expedition 2012. The dive was conducted in Green Canyon at lease block Ewing 915. Spectacular undersea habitats and geologic features were imaged, including a brine pool, brine "river", and small cones composed of what may be precipitated salts emitting gas, probably also mixed with liquid hydrocarbons.

Video courtesy of NOAA Okeanos Explorer Program, Gulf of Mexico Expedition 2012.

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