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I want to know what kind of toilet design for mermaid is, considering they live surrounded by water and they poop through the anus (or whatever the organs name is) that located in the front rather than the rear side.

  • I want to know toilet design for mermaid, so comment or answer that just say that they dont use such thing and poop wherever they want is out of this question,because to me its just ditching the question.

  • Im considering the spaceship toilet kind/type, but Iam not sure can it work or hygiene enough or safe enough if it surrounded by water, and theres also the nonconventional body or anatomy of mermaid to consider.

  • and if it have side effect or different design if its in sea water or plain water please also include it.

  • and if possible include image to help imagine it better.

Feel free to edit my grammar and the tag to the appropriate one, (though i appreciate it if this is not removed when you edit it, give others a chance to know that they are welcome to fix or edit this, if theres still some mistake left.

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    $\begingroup$ It's nice that you explicitly let other users edit your grammar. However please try to learn from those edits and prevent them. After more than 70 questions it should be clear that it's "I", not "i", "I'm" and not "im", "don't" and not "dont". $\endgroup$ – L.Dutch - Reinstate Monica Apr 26 at 3:59
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    $\begingroup$ We are also here to answer questions, not to correct other's English. Writing proper English is a way of showing some respect to those who read your questions. And since you see the edits which are done, you can just follow what the edits do, since they are pretty consistent on all your questions. $\endgroup$ – L.Dutch - Reinstate Monica Apr 26 at 4:33
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    $\begingroup$ You say "what's the difference ?" well I think a point about spelling here is that while we try to be tolerant as obviously there are non-native English users here, it is still a turn off to people and it may decrease the number of people prepared to read and answer your questions. It can even get downvotes from some people. So it's in your interest to get as much right as possible. $\endgroup$ – StephenG Apr 26 at 5:46
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    $\begingroup$ @L.Dutch-ReinstateMonica i do not write "proper english" in my questions, or answers, i make mistakes, i get lazy sometimes, but putting "i" instead of "I" still gets the same message across, if i was writing an english assignment i would write properly, but its not necessary in all situations $\endgroup$ – Topcode Apr 26 at 14:41
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    $\begingroup$ Most people consider it common courtesy to use language (English, in this case, properly). Refusing to do so is, frankly, rude. If you can't be bothered to take a little care and courtesy expressing yourself, why should we be bothered to do so? $\endgroup$ – Matthew Apr 26 at 15:07
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Deep water rivers were the original toilets for the merfolk. These streams of faster moving water (often quite cold) would remove any waste products from the area. The traditions of the primitive Merfolk requires calls in a particular sonar pulse to be emitted down stream just prior to use, so that others can get out of the stream before it "warms up".

As the Merfolk civilization evolved, they began engineering private rooms built along the paths of these streams with an appropriately located hole in the side facing the stream. Vacuum effect from the passing stream would constantly pull water through these underwater outhouses, allowing the occupants to relieve themselves without soiling their garments.

Once the folk developed plumbing and pump technology, the final modern mertoilet was invented. This device, which is installed in almost every merhome, appears very similar to a human male urinal but with a larger hole. A valve, which usually remains closed to conserve vacuum pressure, is controlled by a lever near the top. Just before the user relieves themselves, they push the lever, opening the valve and starting the vacuum induced current within the private bathroom. Once the current is strong enough, waste products are produced and evacuated into the plumbing network.

The plumbing network itself is almost identical to the human equivalent with the exception that it move massively larger quantities of water at a significantly higher rate and pressure.

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I'm going to assume a few things about mermaid culture. They live in harmony with nature and respect their place in the food chain, cycle of life etc. They cultivate some sort of underwater plants for their own consumption or as food for livestock.

The poop would be used specifically to fertilize these crops. The toilet would be more of a composter setup similar to a waterless sawdust toilet. A layer of sand is placed or thrown over the poop after use to cover it, and to get it to sink, and the contents later harvested for use on crops. No flushing required. A fast growing broad-leafed plant is grown near the receptacle, potted plant style, and used to clean-up.

The "seat" would be an upward incline that the user lays on, face down, with handles on the sides to be able to stabilize and hold themselves up next to the opening without using the tail. Using the tail would stir up too much water around the toilet.

If technology allows, a constant negative pressure would be activated, during use, inside the collection area and make sure everything got pulled in and the excess water entering is filtered, waste collected, sanitized and water returned to the surrounding environment.

Depending on the overall setting, ocean water is dirty anyway, and may not need to be 100% sanitized, just solids collected, and excess water expelled away from the users environment.

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    $\begingroup$ Your merfolk are better behaved than those I described in my answer. Well done! +1 $\endgroup$ – Henry Taylor Apr 26 at 4:17

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