The Largest Mass Migration on The Planet Happens Every Single Day, And We Never See It March 24, 2020
At night, they rise. As the Sun disappears over the horizon, a vast movement takes place in the world's oceans, as countless sea creatures begin the long trek upwards towards the surface waters above.
They do not stay long. When the Sun rises, bringing light and the threat of watchful surface predators, they will retreat once more, down into the lower depths of the sea, sheltering in whatever protection the enveloping darkness can afford them.
