The race to fish the larder living in the 'twilight zone'


Dive deep enough into the world's oceans and you will enter the twilight zone. This region, between 200 and 1,000m beneath the ocean's surface, earns its name because only the faintest hints of sunlight can reach such depths. The rest is absorbed and lost in the waters above.

http://www.bbc.com/earth/story/20170...-twilight-zone