Despite the impact of mankind, the size of trees, and the sheer numbers of bugs, multicellular terrestrial life only makes up a small portion of the planet's biomass. The majority of life on Earth lives at the bottom of the ocean, much of it beneath the ocean floor.
Thanks to those extreme depths, science knows virtually nothing about the majority of the planet's lifeforms. But a series of deep sea drilling expeditions over the course of the next year looks to finally shine a light on our planet's richest, and most mysterious, habitats.