Aliens of the Deep
The left one looks like a squid version of Giger's aliens! Check out a couple neat/creepy videos of it: one, two.
The bigfin squids are a group of rarely seen cephalopods with a very distinctive morphology. [...] The family is known only from larval, paralarval, and juvenile specimens, but some authorities believe the adult creature has been seen: Several videos have been taken of animals nicknamed the "long-arm squid", which appear to have a similar morphology.