A rover touches down on an alien surface in a place that has never been explored before.
It’s dark, but when the rover’s searchlight switches on, it reveals a landscape teeming with strange creatures that’ve never been seen before.
Somehow, there is life thriving in this remote place.
While this may seem like the opening scene of some science fiction story of life discovered on another planet, it’s not fiction at all – and the setting isn’t some alien planet, it’s right here on Earth, at the bottom of the sea.