At night, zooplankton like copepods rise vertically through the water column to feed on phytoplankton near the ocean's surface (since phytoplankton need sunlight to grow, they are concentrated here).

At night, the sea surface can absorb and remove up to 15% of smog-forming nitrogen oxides that build up in polluted air in coastal cities like Los Angeles, according to a study published this week ...

She said that the net was dropped 600 feet into an underwater canyon. Plankton, she said, travel deep down into the ocean when the sun is out. When day turns to night, they head closer to the surface.

The researchers found that at a depth of 1 meter (3 feet), 1.9 million square kilometers (734,000 square miles) of the world’s coastal oceans were exposed to artificial light at night ...