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For questions related to the biology of extra-terrestrial organisms. This tag implies the use of the science-fiction tag. Use the science-based or hard-science tags to impose greater scientific restrictions (see warning in tag wiki). The goal of this tag is to answer the question using known science.

0 votes
1 answer
435 views

Scientific Accuracy - Advantages and Complications of Tetrachromacy Underwater

I have devised a semi-aquatic sapient species known as the Hexapi who until now I thought were trichromats. However, after doing my research on the evolution of the eye, I found out that colour vision …
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3 votes
4 answers
819 views

Scientific Accuracy - How can we make an alien brain more 'efficient' than a human's?

I am designing an semi-aquatic sapient species known as the Tetrapi. They have an appearance similar to that octopi, only with 4 tentacles comprised of 3 opposable digits. Unlike octopi, they are air- …
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  • 159