The sciapod is a small humanoid creature, which is distinguished by a single large leg. This leg would be like a single leg, without duplicate structures. It would also be symmetrical. They move by jumping around, and are quite quick. The leg would be roughly as flexible as a human leg

While sirenomelia and such things can cause the legs to fuse, this wouldn't work for the sciapods; because of their powerful leaps, they need a solid pelvis (or other such joint), which is not found with sirenomelia

How would such a being fit together internally?


  • $\begingroup$ What is the range of motion you envision for their single leg? $\endgroup$
    – elemtilas
    Jan 12, 2022 at 13:55
  • 2
    $\begingroup$ Pictures please $\endgroup$ Jan 12, 2022 at 14:10
  • $\begingroup$ en.wikipedia.org/wiki/Sirenomelia $\endgroup$
    – Drew Nolan
    Jan 12, 2022 at 16:51
  • $\begingroup$ What is a "saltatorial"? $\endgroup$
    – Daron
    Jan 12, 2022 at 21:11
  • $\begingroup$ @Daron Adapted for Leaping $\endgroup$ Jan 12, 2022 at 21:18

1 Answer 1


Above the pelvis.

Locomotion with one leg is rather... interesting. Not only does the ball joint of the femur have to be at the centre of the pelvis but there also needs to be room for the muscles around it. This means that the urinary system and anal tract need to be placed ABOVE the pelvis and not under/inside of it.

To picture this, sciapods butts and genitals would sit just above their leg. A single buttcheek to boot! And the anus would be on top, how unfortunate... I imagine that if they wore clothes they would have little belts or tunics to hide their parts.

Advice for sciapods: don't pee while squatting.


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .