This is an exclusive clip from the Deep episode of Blue Planet II. At the bottom of the ocean there are brine pools which have a salinity level three eight times the usual sea level. When a Cutthroat eel gets too close it goes into toxic shock and is lucky to make it out alive. Subscribe: http://bit.ly/BBCEarthSub

WATCH MORE:
New on Earth: https://bit.ly/2M3La96
Oceanscapes: https://bit.ly/2Hmd2kZ
Wild Thailand: https://bit.ly/2kR7lmh

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