Animal migration has fascinated humans for millennia ... Salmon migrating in the open ocean can find the mouth of their natal river by constantly sampling the seawater for changing concentrations ...

Animal migration is ... movements by zooplankton in the ocean—upward by night to seek food, downward by day to escape predators—can also be considered migration. So can the movement of aphids ...

Animal migration is the long-distance relocation of individual animals. It usually involves a substantial number of individuals and is often in response to a seasonal or life-history cue.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A male humpback ...

The vertical migration of Antarctic krill may play a smaller role in oceanic carbon storage than previously believed, according to a year-long study ...

These tiny creatures typically follow a daily pattern known as “diel vertical migration ... these marine animals adapt to abrupt changes in their environment. Observing sea turtles during ...