During the recent GISR expedition, the team encountered a massive burst of methane from the Sleeping Dragon seep they were observing. The explosive burst was strong enough to eject rocks up on to the front deck of the ROV Hercules, some of which made it all the way back up to the surface when we recovered the vehicles.

E/V Nautilus is exploring the ocean studying biology, geology, archeology, and more. Watch http://www.nautiluslive.org for live video from the ocean floor. For live dive updates follow along on social media at   / nautiluslive   and   / evnautilus   on Twitter. For more photos from our dives, check out our Instagram @nautiluslive.