Mermaids' tails should NEVER be able to bend like that. Fish and whale fins are almost like an elongated spine, and each vertebrae should have very limited movement... For the tail to look like that, it has to either be; A. broken, or B. Normal legs stuffed into the skin of a fish/whale tail.
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You know I have never thought of this. But now that you mention it, it`s true. My thinking now is they do it to make them look more alluring. Just a thought. Thank you for this.
