The Vampire Squid
Be afraid, be very afraid! But, on second thought, don’t bother. This terrifying-sounding creature is not anything to be frightened of at all. The vampire squid wasn’t named for any particular behavior but rather because of how it looks: it is dark, and the skin that connects its arms resembles a cape.
provided by starandstyle.com
This fella isn’t even a squid! He’s a distant relative and is bioluminescent. He uses this light to navigate the darkness of his world. He has another unique ability; he has a rare oxygen metabolism that allows him to inhabit parts of the ocean with very low oxygen levels. So maybe we should call him an oxygen squid?