Species
Vampire Squid
Mollusks
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The vampire squid is a small cephalopod found throughout temperate and tropical oceans in extreme deep-sea conditions, using bioluminescent organs and a unique oxygen metabolism to thrive in waters with the lowest oxygen concentrations. It carries two long retractile filaments between the first two pairs of arms on its dorsal side that distinguish it from both octopuses and squids, though its closest living relatives are octopuses, and as a phylogenetic relict it is the only known surviving member of the order Vampyromorphida.
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