With data collected during the EXport Processes in the Ocean from Remote Sensing (EXPORTS) field campaign in 2018 to the Northeastern Pacific Ocean, scientists have now shown that some zooplankton living in the twilight zone of the ocean at depths greater than 300 meters swim up and down also in response to shifts in light due to cloud cover.
Click here for original story, Passing Clouds Cause Some Marine Animals to Make Mini-Migrations During the Day
Source: NASA Goddard Center