[Aliens]"...solitary giant predator caterpillars. Civilization wasn't easy for us"

[Archangel Beth]

Retractable Sheath... Nictitating Membrane?

Originally Posted by Kissamies

they are likely to just hang upside down most of the time, and that is indeed what they seem to be doing in every official picture of them there is. Probably the most natural posture for them.

I wonder if all their control surfaces are either "upside down" so they can operate them whilst hanging, or rotatable like an iPad (though probably with a button) for times when they're on the ground.