What's in a bubble?

Marine Geophysicist Sally Watson:

"My name is Sally, I’ve been working as a Marine Geologist at NIWA for just over 2 years now. My job essentially involves mapping the seafloor and taking samples from the water column so we can understand geological processes shaping the underwater realm. I’m really lucky because this is my second trip to the Bay of Plenty on board RV Tangaroa, so I’m looking forward to seeing if there have been any changes in the shape of the seafloor or the activity of hydrothermal vents since we were here last."