Perhaps the most intriguing of these features is the Mariana Trench — a chasm in the western Pacific Ocean that spans more than 1,580 miles (2,540 kilometers) and is home to the Challenger Deep ...

The deepest point of the ocean – the Mariana Trench – is 11,034 metres deep. It’s located in the western part of the Pacific Ocean and is a 1,580-mile-long stretch (2,542 kilometres) of ...

When these organisms die, their bodies and bodily wastes form carbon-rich particles known as marine snow that filters down toward the ocean floor. In the twilight zone, some of this carbon is ...