Five years in the making, with a budget of over $10 million, Blue Planet: Seas of Life is the most comprehensive series of the Earth's oceans to date. Plunge into the mysterious deep with eight, full-length episodes from the highly acclaimed series. Join Sir David Attenborough as he leads an unprecedented exploration of the ocean, exposing stories of survival against the odds and revealing new species, habitats and behaviors never before caught on camera. Episode 2: A place of mountain ranges, perpetual night, pressure extremes and cold, and the weirdest life forms on our planet. A true voyage into the unknown with constant surprises in store. Fish with grotesquely cavernous mouths and cruel teeth lurk one kilometre below the surface. Any light is living light, but a glow in the dark may be meant to attract the opposite sex, unless it is the deep-sea angler fish who already has her mate conveniently fused to the end of her nose. On the floor of the ocean deep, all manner of primitive creatures crawl across the ooze.