Sharks Were Discovered in an Active Underwater Volcano

One of the world's most unbreakable organisms is the minuscule tardigrade. They can withstand extreme temperatures of -328 to 300 degrees Fahrenheit, mountaintops, the bottom of the ocean, and even outer space. No environment seemed to be too severe. And as it happens, some sharks have adopted some of the tardigrade's strategies.

Kavachi is the name of an underwater volcano that is close to the Solomon Islands. It is an active volcano that frequently erupts, spilling ash, lava, and toxic substances into the lake. While it was not erupting in 2015 when researchers went to examine, the water was still extremely hot and corrosive. Two species of sharks were spotted by a camera that was sent down and were present in the volcano's caldera.

The ocean surrounding the volcano is merely another extreme because sharks are known to be able to withstand deep water. It's thought that their capacity for electromagnetic signal detection may aid in their survival by alerting them before to the eruption of the volcano so they can flee the area.