The fate of water Water is the one of most important elements of our planet. It covers 71% of the Earth's surface. Because water is so essential to every living forms on Earth, we need to understand what happens to the water during its cycle into the deep Earth.
Discovering Life in the Mariana Trench The Sun is required for most life and life is rare in the ultra-deep Mariana Trench (> 5km depth). But in September 2010, scientists discovered dense communities of clams in the Mariana Trench, near the Challenger Deep.