At home was several hours' hack-work waiting for him before he went to bed, and after he went to bed there was a volume of Weismann waiting for him, to say nothing of Herbert Spencer's Autobiography, which was as replete for him with romance as any thrilling novel.
The ocean's deepest area is the Mariana Trench (also called the Marianas Trench), which is about 11 km (almost 7 miles, or almost 36,000 feet) deep. The trench is 1,554 miles long and 44 miles wide, and is like the Grand Canyon of the ocean, although it is 120 times larger.
Mariana Trench: Mariana trench is the deepest point on Earth located in pacific ocean, have a depth of 10911m called challenger deep, length of 1580 miles and width of 43 miles. The depth and high pressure of Mariana trench made it to unsustainable for humans, became unexplored.