Off the coast of Norway, a marine research vessel is on an important mission. A group of researchers aboard the ship are watching closely as a giant steel wire with a fine-meshed trawl net at the end is rolled out. With each rotation, the trawl net is lowered deeper and deeper into the sea, and somewhere between 200 and 1,000 meters below the surface in what is known as the mesopelagic twilight zone, the wire fully extends and reaches its goal.
Click here for original story, The ocean’s twilight zone is filled with life, but there is a big risk of overfishing
Source: Phys.org