Unexplained Discoveries Found Deep in the Ocean — Number 7 Still Baffles Scientists

3. Lake Vostok’s Hidden Ecosystem, Antarctica
Beneath over two miles of ice in Antarctica lies Lake Vostok—a sealed-off lake untouched for millions of years. When scientists finally drilled through the ice, they found strange microbial life unlike anything else on Earth. The discovery suggests life could exist in similar extreme environments, like on Jupiter’s moon Europa.