Sharks filmed living in active underwater volcano

When a National Geographic team dropped an 80-pound camera into an active volcano beneath the South Pacific Ocean, they expected to see unique geology and hydrothermal activity. What they didn’t necessarily expect to see were sharks — but that’s exactly what their camera picked up, as you can see in the video above.

While most of us only think of volcanoes as fire-spewing mountains above sea level, according to Oregon State University’s Volcano World website, about 75 percent of the globe’s annual output of magma comes from underwater — or submarine — volcanoes. The volcano the National Geographic team explored is called Kavachi and has a summit that’s 66 feet, or 20 meters, below the surface of the water near the Solomon Islands.

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