The ocean is totally dark at depths greater than 600 meters and some of the creatures at that depth glow. The glowing light serves to attract prey and mates.

Across the pond is a British term that means across the ocean.

The Marianas Trench is the deepest part of the world’s oceans. It is also the deepest location on the surface of the Earth’s crust. The trench has a maximum depth of about 10,911 meters (35,798 feet; 6.78 miles), and is located in the western North Pacific Ocean, to the east and south of the Mariana Islands, near Guam.

The Atlantic Ocean is the second-largest of the world’s oceanic divisions with a total area of about 106.4 million square kilometres (41.1 million square miles). The Atlantic Ocean covers approximately one-fifth of the Earth’s surface.