The fact that this creature has the word “vampire” in its name is probably a dead giveaway to how creepy it is. Though it gets its name from its ability to fold its webbed arms over its head, like a vampire does a cloak, what really makes it scary are its red eyes and luminescent body.
Since it lives in the dark, at depths of up to 3,000 feet, the vampire squid can also turn off its lights (or rather, its photophores, which create light through a process called bioluminescence).
This makes the squid entirely invisible at its usual depths. Combine that with a siphon jet, which propels the squid through water at a rate of two body lengths per second, and you have the ultimate predator — invisible and fast.
Where it lives: the North Pacific, including off the coast of the Aleutian Islands
How to find it: Given the depths it resides in, your best bet is archival (or live) footage from the Nautilus. It's also occasionally displayed at museums, as it recently was at the Monterey Bay Aquarium in California.