the elephant seals enter the "twilight zone" -- also known as the mesopelagic zone -- a layer of the ocean that extends from about 656 feet to 3,280 feet below the ocean's surface that is abundant ...

By Spoorthy Raman Rhythmic clicks, grunts and roars fill the Año Nuevo Island Reserve in California, home to a large breeding ...

A great starter episode for any budding The Twilight Zone fan, “Time Enough at Last” is the ultimate episode when it comes to ...

The twilight-zone fish migrate vertically, feeding on zooplankton in surface waters before returning to the ocean depths during the day. This vertical migration transports surface carbon to deep ...

Get ready to head to the Twilight Zone (metaphorically!) as we track down the Baird’s Beaked Whale and find out how these elusive creatures withstand the crushing pressures of the deep ocean.