Global cooling helped life flourish in ocean’s twilight zone
16 March 2021
Life populating the shadowy ocean flourished thanks to the cooling of the Earth’s climate over millions of years.
![Shadowy ocean life screen_shot_2021-03-16_at_17.21.34](https://www.ucl.ac.uk/biosciences/sites/biosciences/files/styles/large_image/public/screen_shot_2021-03-16_at_17.21.34.png?itok=tWyGHCB0)
The research team tracked the development of the largest and least understood habitat on Earth, home to a wide range of mysterious creatures, including plankton, jellies, krill, squid and fish.
The ocean’s twilight zone extends from 200 to 1,000 metres below the ocean’s surface. Within it is a hidden treasure of biomass and biodiversity that is key to the health of our oceans.
https://www.ucl.ac.uk/news/2021/mar/global-cooling-helped-life-flourish-oceans-twilight-zone