it's prosaic
This is going to give a lot of people nightmares.
animalworld:

PROMACHOTEUHID SQUID has creepy “teeth”Promachoteuthis sulcus©Richard E. Young (from tolweb.org)
Promachoteuthis sulcus  is known from a single specimen collected in the  south Atlantic at a depth of 1759-2000 meters. The holotype* is an  immature female with a mantle length of 25mm. Its diagnostic  characteristics include tentacles that are thicker at their base than  the arms, and arm suckers that are bigger than the suckers on the  tentacle clubs. However, the thing that got this obscure little squid  noticed was this photo of its mouth, showing what seem to be  disturbingly human-like teeth. 
P. sulcus is known from a single specimen caught by the German research vessel R/V Walther Herwig in an open net off Tristan Da Cunha, southern Atlantic Ocean, at a depth of 1750–2000 m.
Souce: http://www.indiesquidkid.com/tag/ten-sensational-squids/
Other posts:

This is going to give a lot of people nightmares.

animalworld:

PROMACHOTEUHID SQUID has creepy “teeth”
Promachoteuthis sulcus
©Richard E. Young (from tolweb.org)

Promachoteuthis sulcus  is known from a single specimen collected in the south Atlantic at a depth of 1759-2000 meters. The holotype* is an immature female with a mantle length of 25mm. Its diagnostic characteristics include tentacles that are thicker at their base than the arms, and arm suckers that are bigger than the suckers on the tentacle clubs. However, the thing that got this obscure little squid noticed was this photo of its mouth, showing what seem to be disturbingly human-like teeth. 

P. sulcus is known from a single specimen caught by the German research vessel R/V Walther Herwig in an open net off Tristan Da Cunha, southern Atlantic Ocean, at a depth of 1750–2000 m.

Souce: http://www.indiesquidkid.com/tag/ten-sensational-squids/

Other posts:

(via theladyfish)