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• There are many benefits to being a marine biologist by Arziislugia, skrunklystar

  Fandoms: Five Nights at Freddy's  

  • Explicit
  • No Archive Warnings Apply
  • Multi
  • Work in Progress

  30 Dec 2025

  Tags

  • No Archive Warnings Apply
  • Sun (Five Nights at Freddy's)/Reader
  • Moon (Five Nights at Freddy's)/Reader
  • Moon/Sun (Five Nights at Freddy's)/Reader
  • Daycare Attendant (Five Nights at Freddy's)/Reader
  • Sun (Five Nights at Freddy's)
  • Moon (Five Nights at Freddy's)
  • Daycare Attendant (Five Nights at Freddy's)
  • AFAB reader - Freeform
  • reader is not called y/n
  • mermaid au
  • Mer AU
  • Marine biologist reader
  • Biting
  • Marking
  • Mating Cycles/In Heat
  • Oviposition
  • Egg Laying
  • Eggpreg
  • Pheromones
  • Scent Kink
  • Breeding
  • Vaginal Sex
  • Cunnilingus
  • Threesome - F/M/M
  • Tentacle Dick
  • Bioluminescence
  • Hypnosis
  • (kind of?)
  • poor understanding of human biology
  • Double Penetration in One Hole
  • Near Drowning
  • Mild Blood

  Summary

  Marine biologists aren't supposed to fall in love with their specimens, but you've always been kind of a rulebreaker. When two new mer-creatures arrive at your lab, you get a chance to speedrun The Shape of Water - and get a few dozen eggs inside you, too.

  Language:

  English

  Words:

  20,624

  Chapters:

  7/8

  Collections:

  2

  Comments:

  101

  Kudos:

  1,701

  Bookmarks:

  326

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  37,803