Definitions

1. noun

The deepest benthic zone, extending from the hadal zone to the bottom of the ocean, characterized by extreme pressure and darkness.

“The researchers studied the unique ecosystem of the archibenthos in the Mariana Trench.”

2. noun

A hypothetical zone between the hadal and abyssal zones, characterized by extreme pressure and darkness.

“The concept of archibenthos is still a topic of debate among marine biologists.”