Add Yahoo as a preferred source to see more of our stories on Google. The world's oceans are big and dark and deep. They cover approximately 70% of the planet’s surface and contain a huge portion of ...

A Chinese submersible has discovered thousands of worms and molluscs nearly 10 kilometres (six miles) below sea level in the Mariana Trench, the deepest colony of creatures ever observed, a study ...

How do fish survive in the extreme conditions of the deep sea—amid icy cold, darkness, and immense water pressure? A genomic study provides surprising answers: A single mutated gene might have ...