Planet Earth: Blue Planet II

BBCA | 9:00 pm

A new episode called "The Deep" plunges viewers on an epic journey into the unknown that reveals the abundance of life that thrives in the pitch-black depths of the seabed. Producer Orla Doherty and her team become the first humans to dive more than 3000 feet below the surface of Antarctica’s frigid waters in a submersible to explore under icebergs the size of a city block. They discover such creatures as the Barreleye Fish, whose transparent head is filled with jelly.