As of the writing of this post, there are three particular answers to What would an out-of-water submarine (for water-breathing mer-people) look like? which have raised some eyebrows, mine included. The question essentially asks for a land-based version of a military submarine for an aquatic species:
My mermen & women are at WWII era warfare and interested in their version of 'underwater,' meaning they want out-of-sea vehicles (sorry, there is no antonym to submarine) to fight over land similar to our attempts to occupy the seas with submarines.
The first two of these three answers - including the most upvoted answer of all, with 64 net votes (+66/-2) - are essentially just pictures of a fish tank on wheels, with little explanation or supplementary material that relate to the question. The third one is better, but could use a lot more explanation. Here's the full text of the 64-vote answer:
A one has been built already: https://youtu.be/YbNmL6hSNKw
If I saw that answer just posted to the question, I would consider it a joke and might delete it. However, I didn't see it when it was just posted, and it now has a score of 64. Now, I'm not saying that highly-voted answers shouldn't be deleted, but none of the mods would, I think, be comfortable taking unilateral action on a post this well-received.
What do people think about these three answers? Are they valid answers, which should be left alone? Are they jokes, which should be downvoted and/or deleted? Is there a middle ground somewhere?
Meta discussion and reviewing in the queues seem to indicate that the community supports deletion. As such, all three posts have been deleted.