Sorry to tell you, but I’ve been following this story and the science was a little fuzzy. First off the Arsenic they fed the bacteria had phosphorus in it so the bacteria could have just eaten that, second the extracted DNA was poorly cleaned so it could have been contaminated. This is a long way from proof of arsenic life.
Proof is a bad word when dealing with one study to begin with. My teachers always told me to say ‘this study suggests’ rather than it proves because proof can be unproven.
Moreover, if you’re coming up with a strange body for your aliens you also need to come up with a reason for the morphology. With my massive Red Stone warriors I came up with a clear evolution that molded them into their present state. Every now and again people keep saying ‘I thought they weren’t humans because they were so tall.’
They’re tribe is no different from you or I than a pigmy, but the diversity among the ranks of the human race is lost on many a modern American. There are lots of humanoids running around on earth for us to make into aliens and even more strange things in the sea to give intelligence. Still, let us set that aside for now.
Things evolve out of utility and if you’re going to make a true alien the first question is “why did it evolve?” It needs hands to hold with and feet to walk with, eyes to see, and a brain to wonder. If something is going to be so different from humanity that it is truly bizarre then why did that life form become dominant?
The final note in this alien song is, “what does it have to do with the story?” Remember that people can’t see what you’re talking about so you need to show them with words. My Red Stone are giants and so I have to keep reminding the reader that they are dealing with a being bigger and stronger than normal humans. If I forgot to do that they would just be people who use different words and their uniqueness would be lost.
Different isn’t always good so if you’re coming up with something to be different you’re thinking too hard.