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island fever? by Anonymous
Fandoms: Transformers One (2024), Transformers - All Media Types
01 Jan 2026
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A Castaway (you) after a cruise goes terribly, terribly, wrong meets a merman (b127) isolated from the rest of his kind.
Everything else that happens is just a natural order of events
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They did say that what you learn in med school can never measure up to the weirdness you find out in the field. Somehow, Hot Rod had not expected the difference to be this extreme.
Or: Two sea-lions teach their clueless former human friend how to walk (again)
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Inspired by Keferon's Apocalyptic Ponyo AU on Tumblr. You can see more context for this story there.
Blaster had not expected the literal apocalypse come to his (figurative) doorstep, but here he was. In just one week he went from a temporarily suspended aquarium employee to a survivor surviving the flooded city full of dangers and mutant creatures that want to eat him. Now, he not only has to go back to the aquarium to see what could have happened to Jazz and Prowl during the tsunami, but also deal with the aftereffects of his decision.
Would he be able to survive the apocalypse and the mutant sea creatures? Would he be able to find Jazz and Prowl? Would he be able to go back home?Series
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Jazz is separated from the others; Optimus has lost his memory; Prowl is battling down virus-ridden dysphoria. The once proud Cybertronian species is now a collection of confused, mind-wiped technorganics, taken as slave labor by Quintesson invaders.
If only there was some kind of (in-)famous revolutionary lurking around who might have the right force of personality and sheer stubbornness to lead their people in a slave revolt...
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After an ebb a flow follows by Koshmareq
Fandoms: Transformers - All Media Types, Transformers: Earthspark (Cartoon)
25 Dec 2025
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Hello, my name is Dorothy Malto, veteran of the US Army, wife to my handsome marine biologist husband Alex, and a proud co-owner of the Malto Sea Sanctuary, newly reopened for visitors to see.
After leaving the army with honors, my husband Alex and I spent our life-savings to buy and renovate an old sea research facility into a sea sanctuary, to help the creatures of the depths to recover and for humans to learn about them. We house five sea lions, two leatherback turtles, a small family of sea otters and many schools of endangered fish, which we regularly release into the wild.
This month, we've decided to give a chance at a second life for three of one of the rarest creatures of the depths: mers. All of them are seniors currently being sold, and our wish is to be able to give them a worthy retirement after life spent entertaining humans, but we won't be able to do it without your support.
_____The Maltos decide to buy three mers, Elita one, Optimus prime and Megatron, to give them a new chance at life after decades of being a source of entertainment. Some take the change better than others
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For decades it was highly controversial to keep seekers in aquariums, because they don't survive very long, none lasting more than a year. That all changed 20 years ago, when a specimen was born in captivity.
Starscream is happy in his aquarium, showing off tricks to the crowd and proving that, with the right training, mers can be taught simple language and even basic maths.
Eventually though, his keepers decide it's time to see if their experiment can be repeated, if Starscream was a one-off, or if all captive-bred seekers can be "trained". His keepers decide to mate him with a freshly caught, bonded pair.
Will Starscream and the new additions learn to get along? Or is Starscream doomed to be alone forever.
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Abyss by Unspecified_Worm
Fandoms: Transformers - All Media Types, Transformers Generation One, The Transformers (IDW Generation One)
19 Nov 2025
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Summary
Galvatron catches a little human to keep for himself.
Series
- Part 2 of Mermay
- Language:
- English
- Words:
- 909
- Chapters:
- 1/1
- Kudos:
- 8
- Hits:
- 162
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I have a Sparkmate... he's a Siren by RavageDaCat
Fandoms: Transformers - All Media Types
11 Nov 2025
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Prowl realizes he's one of few blessed by Primus to have a sparkmate. He also finds out said sparkmate is a merformer. Shenanigans ensue.
Series
- Part 3 of The Siren's Mate
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Lost Boys by Skittles the Sugar Fairy (SkittlesFairy)
Fandoms: Transformers - All Media Types
10 Nov 2025
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Summary
Jazz is one of the only specimens brought back to Cybertron from a botched visit to the long lost colony of Nereus and the Polyhex National Aquarium is thrilled to be chosen to host this amazing find. A chance to study a new species and display it to the public is a huge honour and responsibility. Meanwhile Jazz would just like the strange people holding him hostage to stop a moment long enough to realize he's more than a particularly smart pet. Thankfully Rung will be there to save the day! ...Eventually. Until then, Jazz must survive the daily horrors of being the latest star attraction.
Series
- Part 1 of Neverland
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The aftermath of a storm has left the infamous pirates, the Autobots, to look for more work as they lost a lot of their possesions. Getting a hint as to the possibility of hunting merformers and getting paid more than enough, their captain, Optimus Prime, decides to go for it.
Bumblebee, one of his most loyal crewmates notices theres something wrong. Optimus seems obsessed with the merformers. It all goes even more to hell when they finally do catch one, and Bumblebee cant help but be intruiged and grow closer to it.
Background relationships:
Past megop
thunderwarp
dratchet
jazzprowl
onesided lockprowl -
Whumptober 2025 by Creatively_Written
Fandoms: Transformers - All Media Types, Transformers Generation One, Transformers One (2024), Transformers Animated (2007)
25 Oct 2025
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It's that time of year again! Time for Whumptober!
Our first story: Iacon and the high guard have reached a peace agreement, for the Quintesson threat still looms. Optimus and Megatron need to get ready for the ceremony.
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Merformers: Friends from the Waves by RadioWave89
Fandoms: Transformers: Prime, The Transformers (IDW Generation One), Transformers - All Media Types
23 Oct 2025
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Transformers Prime AU where a human finds the mer who saved her when she was little. Will be some (a lot of) characters from IDW
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Don’t Forget To Stuff Me by Saberteeth_claws
Fandoms: Transformers - All Media Types, Transformers: Prime
22 Oct 2025
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Theoretically, it’s entirely possible to cross breed with similar Cybertronian subsections. In practice, it remains to be seen.
Tf Kinktober Day 22Series
- Part 6 of TF Kinktober 2025
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Megatron always felt a pull toward the sea, but never understood why. He was too busy forming a revolution with Optimus to peacefully end the council to ever take much mind to it. It was known that Mer mechas lived in the rust sea. However, they kept themselves hidden.. until one night
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Marine Centre -Merformers AU by Docnot
Fandoms: Transformers - All Media Types, The Transformers (IDW Generation One), Transformers Generation One, Transformers (IDW 2019), Transformers Animated (2007), merformers - Fandom
23 Sep 2025
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Yawk-yawk Marine Rehabilitation centre. Its home to many injured Oceanides or as many liked to call them mers. It was also leading research into the way the oceanides socialised and lived, the large centre bordered on the ocean side where many Of the oceanides would gather due to the safety it gifted them to raise their young, care for injured.
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Megatron sails the high seas looking for mer and making a living. Orion finds him first. Orion should stop messing with the delicate food chain of the humans. Even if they are rather amusing.
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I wrote this over 6 months ago and forgot about it. Either way come get yall's merformer soup.
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"THIS CANNOT BE"
NO, NO, IT'S NOT REAL
SMOKESCREEN DRINKING DRY I KNEW THAT REFUGING IN THAT CAVE WAS A BAD IDEA, NOW HE'S SEEING ONE OF HIS BIGGEST PREDATORS
......STASRCREAM CAN'T BELIEVE THAT A LITTLE ORCA HAS ENTERED HIS CAVE... BUT WHO SAYS IT CAN'T HELP HIM CATCH HIS HEAT
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Circle of the Sea (In hibernation rn) by GloomyScarecrow
Fandoms: Transformers - All Media Types
10 Aug 2025
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Megatron and Starscream hate each other, it was a well known fact.
So what will happen when they are taken away from the deceptions to a strange ocean filled with mysteries? What will happen when they feel long forgotten coding return? Will they fall in love or tear each others sparks out?
Find out every two weeks <3
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Pearl by Unspecified_Worm
Fandoms: Transformers - All Media Types, The Transformers (IDW Generation One), Transformers Generation One
08 Aug 2025
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Mixmaster feeds Sunny one of his concoctions. It isn't pretty.
Series
- Part 1 of Mermay
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optimus has waited for his mate for a very long time. but just when he was starting to lose hope, you save him from loneliness. after so many years you finally heard his song. his mate. you.