due to the removal of signalling constraints and changes in metabolism, slime girls actually have significantly longer attention spans and working memory than baseline humans. you might be wondering, then, why are they like that? well, you’ll see for yourself soon enough
also in this world there are spider people who work like portia spiders, they stand still for hours then have a single superintelligence-thought. cutting edge of cybersecurity is all portia-complete though mainstream stuff is like it is in our world because still needs...
this world has underwater cities bc of aquatic people!
octopus people have tentacle people (about as smart as monkeys) each with their own unique and quirky personalities. theyre all good friends bc they can communicate telepathically
dolphin mermaids are like elves, once they have exhausted their time on this earth they swim into the depths, only rarely to visit the baseline humans
dolphalinor is to baseline eyes a wretched hive of scum and villainy. before turning into a dolphin mermaid, some have been horrified at the lawlessness. but afterwards, they but smile and chuckle - they now understand it perfectly
(octopus person <> tentacle people, different octopus ppl cant share thoughts directly with each other by default)
...to be possible for baseline humans to maintain them and portia transformations are uncommon enough that they're expensive to hire