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Q&A What would be the usefulness of both arms and fins on a sea dwelling, amphibious organism?

I am currently designing a highly intelligent species for a sci-fi project I am working on. They are quite similar physically to prehistoric salamanders or similar amphibians, but I am having troub...

3 answers  ·  posted 6y ago by SentiCarter‭  ·  last activity 6y ago by SentiCarter‭

Question biology evolution creature-design xenobiology