Octopus Volcano

Deep in the heart of the Mediterranean Sea lies the volcanic island of Stromboli. Erupting every 20 minutes, it is one of the world's most active volcanoes. Life on the surface is tough when the volcano is spewing molten lava. Beneath the surface, a healthy population of common octopus thrives. Scientists are trying to discover what allows the octopus to survive in such a hostile environment.

• Simon BarrittNarrator