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Submitted on
February 26, 2010
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The Mermaid Problem by XNinjaRed The Mermaid Problem by XNinjaRed
Of course, they're fantasy creatures, so you're not supposed to look at it logically, but just try and you'll see the anatomical problems just by thinking about it!

Ami is a character by :iconapinkishblue: .
Mermaid Ami concept and Cho character by :iconxninjared: aka Me.

Request more mystical creatures for me to criticize if you know some.
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I always assumed that mermaids and mermen have genitals, but they're hidden under the fin and they just bring them out when needed
Maybe their genitals are retractable?  Like a cat can velvet their claws?
Ah one more think,merpeople have no human face but beautiful face alien like and they are naked they don't wear bra!

That's true believe me.

Mermaids and mermen are mammals,they are evolved from humans, they have the tail of sea mammals.See the body found of animal planet.
That was a hoax; there's even a disclaimer at the end of the documentary 
lovelyprincess1234 Aug 25, 2013  Hobbyist Filmographer
Scarecrow113 Aug 1, 2013  Hobbyist Writer
Fish sex is insertion free! Females lay eggs and males crop dust them with sperm. I suppose that's how mermaids reproduce.
Ami: Why did I turn into a mermaid anyway?
Cho: Fanservice?
1) it's possible they could lay eggs after mammalian copulation (look at the platypus). I'm still leaning more towards live birth, though. Dolphins have been doing it for longer than humans have been a species.

2) Clam shells persist after clams die.

3) If they're intelligent enough to use tools, the females might have bras in order to prevent massive sagging...and retain a slimmer profile to swim better. (Again, if they have breasts, that's leaning towards a mammalian base.)

4) Uh...they wouldn't.

5) I'm guessing trial and error, myself.

6) Evolution is a combination of two factors...random mutation and selection pressure. (bear with me on this.) Random mutation arises in every population. Not all of these mutations work. Those that do, however, have a better chance to succeed. That said...if merfolk are mammalian, it'd be beneficial against trauma to the chest.

7) They make sense because over time they would have adapted their population to the oceanic environment (not by choice unless they have some seriously advanced bioengineering techniques, but by the fact that traits that work tend to survive in the population). The fish tail, though, would likely be fishy on the outside.

8) I'm leaning towards mammal, based on the arrangement of body parts and the fact that mostly their tails are aligned horizontally...that's a mammalian trait. Also, there are certain birth defects where the babies develop a "tail" rather than legs. However, these defects also occur with other defects which are severely deforming and incompatible with life. If merfolk evolved, the genetic expression would preclude the non-viable traits. (Look up "sirenomelia.")

9) Not sure about the fish thing, but if the are...I'd say convergent evolution. Breasts aren't made to create milk, but rather to attract mates.

10) Certain dermatological conditions occur in humans to produce scaly skin. Mostly these are associated with disease symptoms, but again, they might have a different genetic expression.

11) There are a few locations...behind the ears would be an embryological solution, but the more likely location would probably be at the base of the lungs...the lung exchange surfaces drain both upward for gas and downward for fluid, so "drowning" still passes a fluid over the exchange surface.

12) If they did breathe like dolphins, they probably engineered their cities to have air pockets which refresh themselves via mechanical ventilation or engineered plant life (turn over the CO2 for O2).

13) Pelvic region. Again, look at dolphins.
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