A anatomical layout I made to give my Metroids some structure. A lot of the organs where inspired by jellifish cus of obvious reasons, including primitive visual sensors (the bumps on each side by the smaller mandibles) a nerve system in the form of a net in it's gelatinous body and the use of diffusion to get it's oxygen through it's skin. Yes, I am no biologist but I gave it a shot.
I also hollowed out it's teeth and gave it a ridge structure on the inside. Maybe for better gripping of it's victims or the main organ for the energy sucking. I also thought this looked cooler since it made them look less like teeth and more like a shell or really hard material developed from something once softer.
I added two glands in the mid portion of it's body that I wanted to be what produced slime to keep the thing from dehydration and generally support all the drooling I wanted it to do.
I also made the oral area of the Metroid a little creepier and added tons of hollow needle like teeth. Since it can't sustain itself on energy alone I thought that the mouth would be a logical place to get the other stuff that it needs by simply sucking it out of it's pray at the same time that it drains the energy. The thing in the center of it's mouth is supposed to be some sort of sensory organ controlling the contraction of the large membrane surrounding it's oral area and connecting to the mandibles.
And yes, I am aware and it was totally on purpose.
Backround by: Ryan Barrett, also known as Infinity's End.