What are Keropion?
In order to understand Keropion, you must understand Lamia. These are generally portrayed as like mermaids, but snake instead of fish below the waist. Keropion are my own variant on this theme; take a snake about the size of Titanoboa, give it three short necks, and instead of heads it has three identical (and female) human upper halves.
Yes, I know I could handwave it, but logic and natural laws still exist (for the most part) in my world, so I'd like to know what survival issues could arise with this type of organism.
Would cooperation be an issue, for example? Three identical girls fighting for control? Could a Titanoboa's body even support that kind of weight? Would the necks below each girl's waist be a help or a hindrance?
Specifically, I'm asking on the following issues:
Weight bearing/locomotion-considering that the serpentine lower half has to bear its weight and three human upper bodies, this may prove problematic, especially once movement is considered.
Calories-Powering three different upper bodies and a giant snake's body is going to take a lot of calories. Even with a snake's metabolism and ability to swallow large creatures whole, this is almost definitely going to be a problem.
Coordination-Three different heads, three different potential ways of doing something, unknown chance of disorder. As close as triplets can get, and even assuming each triplet can communicate with each other using chemical signals and electrical impulses, like the brain does with the rest of the body, this could easily prove problematic.
Distribution-Heat, nutrients, oxygen, and so forth need to be distributed through the body. Keropion may have problems dissipating heat and transporting aforementioned resources via the bloodstream.
Flexibility-Each upper body will need space in order to function (ie. to minimize the chances of them getting in the way of each other), and to prevent issues with inflexibility and limited range of motion. This is what the necks are for, and it seems feasible that natural selection would adapt them to have the flexibility needed, but are flexible necks capable of holding a human upper body like this even feasible?
My question is, considering the issues above, could Keropion survive as a species?