Say we figured out how to use CRISPR to create full-on fantastical animal hybrids, like centaurs and hippogriffs and things like that. If you were to make a being similar to a mermaid, but with an octopus bottom half instead of a fish, where would it's vagina be? A female octopus's vagina-equivalent is on its mantle (the head part in layman's terms), and a female human's is between her legs, so where would it go on an animal with a human's torso, arms, and head and an octopus's tentacles?