Top Mermaid Anime Recommendations

ONE PIECE

Also known as ONE PIECE.

Studio: Toei Animation
Status: Releasing
Genres: Action , Adventure , Comedy , Drama , Fantasy

Gold Roger was known as the Pirate King, the strongest and most infamous being to have sailed the Grand Line. The capture and death of Roger by the World Government brought a change throughout the world. His last words before his death revealed the location of the greatest treasure in the world, One Piece. It was this revelation that brought about the Grand Age of Pirates, men who dreamed of finding One Piece (which promises an unlimited amount of riches and fame), and quite possibly the most coveted of titles for the person who found it, the title of the Pirate King.

Enter Monkey D. Luffy, a 17-year-old boy that defies your standard definition of a pirate. Rather than the popular persona of a wicked, hardened, toothless pirate who ransacks villages for fun, Luffy’s reason for being a pirate is one of pure wonder; the thought of an exciting adventure and meeting new and intriguing people, along with finding One Piece, are his reasons of becoming a pirate. Following in the footsteps of his childhood hero, Luffy and his crew travel across the Grand Line, experiencing crazy adventures, unveiling dark mysteries and battling strong enemies, all in order to reach One Piece.

*This includes the following special episodes:
- Chopperman to the Rescue! Protect the TV Station by the Shore! (Episode 336)
- The Strongest Tag-Team! Luffy and Toriko's Hard Struggle! (Episode 492)
- Team Formation! Save Chopper (Episode 542)
- History's Strongest Collaboration vs. Glutton of the Sea (Episode 590)
- 20th Anniversary! Special Romance Dawn (Episode 907)

Tags: Pirates , Travel , Shounen , Ensemble Cast , Super Power , Found Family , Male Protagonist , Ships , Conspiracy , Tragedy , Slapstick , Prophecy , Politics , Time Skip , Royal Affairs , War , Slavery , Dystopian , Fugitive , Crime , Gods , Lost Civilization , Swordplay , Henshin , Cyborg , Monster Boy , Primarily Adult Cast , Shapeshifting , Anti-Hero , Food , Philosophy , Animals , Robots , Anthropomorphism , Skeleton , Anachronism , Guns , Desert , Medicine , Samurai , Prison , Post-Apocalyptic , Espionage , Indigenous Cultures , Drugs , Artificial Intelligence , Kuudere , Monster Girl , Fairy , Revenge , Aromantic , Marriage , Assassins , Dragons , Battle Royale , Demons , Adoption , Mermaid , Ninja , Time Manipulation , Angels , Kabuki , Kaiju , Clone , Zombie , Arranged Marriage , Gender Bending , Blackmail , Trains , Unrequited Love , Human Experimentation , Dinosaurs , Interspecies , Fake Relationship , Brainwashing , Transgender

Jibaku Shounen Hanako-kun

Also known as Toilet-bound Hanako-kun.

Studio: Lerche
Status: Finished
Genres: Action , Comedy , Drama , Mystery , Supernatural

"Hanako-san, Hanako-san... are you there?"

At Kamome Academy, rumors abound about the school's Seven Mysteries, one of which is Hanako-san. Said to occupy the third stall of the third floor girls' bathroom in the old school building, Hanako-san grants any wish when summoned. Nene Yashiro, an occult-loving high school girl who dreams of romance, ventures into this haunted bathroom... but the Hanako-san she meets there is nothing like she imagined! Kamome Academy's Hanako-san... is a boy!



Tags: Ghost , Youkai , Mythology , School , Female Protagonist , Primarily Teen Cast , Afterlife , Male Protagonist , Urban Fantasy , Tragedy , Twins , Episodic , Shounen , Exorcism , Ensemble Cast , Femboy , Heterosexual , Slapstick , Achronological Order , Conspiracy , LGBTQ+ Themes , School Club , Mermaid

Gake no Ue no Ponyo

Also known as Ponyo.

Studio: Studio Ghibli
Status: Finished
Genres: Adventure , Fantasy

A young boy named Sosuke rescues a goldfish named Ponyo, and they embark on a fantastic journey of friendship and discovery before Ponyo's father, a powerful sorcerer, forces her to return to her home in the sea. But Ponyo's desire to be human upsets the delicate balance of nature and triggers a gigantic storm. Only Ponyo's mother, a beautiful sea goddess, can restore nature's balance and make Ponyo's dreams come true.



Tags: Coastal , Natural Disaster , Primarily Child Cast , Kids , Environmental , Anthropomorphism , Urban Fantasy , Rural , Magic , Male Protagonist , Family Life , Female Protagonist , Swimming , Ships , Mermaid , Gods , Chibi , Interspecies , Revenge

Josee to Tora to Sakanatachi

Also known as Josee, the Tiger and the Fish.

Studio: bones
Status: Finished
Genres: Drama , Romance , Slice of Life

The story centers on the relationship between Tsuneo and Josee. Tsuneo is a university student, and Josee is a young girl who has rarely gone out of the house by herself due to her being unable to walk. The two meet when Tsuneo finds Josee's grandmother taking her out for a morning walk.



Tags: Disability , Female Protagonist , Male Protagonist , Tsundere , Heterosexual , Primarily Adult Cast , Coming of Age , Rehabilitation , Drawing , Scuba Diving , College , Tragedy , Love Triangle , Mermaid , Unrequited Love , Coastal , Time Skip

Monster Musume no Iru Nichijou

Also known as Monster Musume: Everyday Life With Monster Girls.

Studio: Lerche , Seva
Status: Finished
Genres: Comedy , Ecchi , Fantasy , Romance

Monsters: they're real, and they want to date us!

Three years ago, the world learned that harpies, centaurs, catgirls, and all manners of fabulous creatures are not merely fiction; they are flesh and blood - not to mention scale, feather, horn, and fang. Thanks to the "Cultural Exchange Between Species Act," these once-mythical creatures have assimilated into society, or at least, they're trying.

When a hapless human teenager named Kurusu Kimihito is inducted as a "volunteer" into the government exchange program, his world is turned upside down. A snake-like lamia named Miia comes to live with him, and it is Kurusu's job to take care of her and make sure she integrates into his everyday life.

Unfortunately for Kurusu, Miia is undeniably sexy, and the law against interspecies breeding is very strict. Even worse, when a ravishing centaur girl and a flirtatious harpy move in, what's a full-blooded teenage human with raging hormones to do?!



Tags: Monster Girl , Female Harem , Slapstick , Nudity , Male Protagonist , Primarily Female Cast , Urban Fantasy , Cohabitation , Interspecies , Centaur , Seinen , Heterosexual , Primarily Adult Cast , Mermaid , Parody , Ensemble Cast , Demons , Zombie , Dullahan , Chuunibyou , Tanned Skin , Tomboy

Amagi Brilliant Park

Also known as Amagi Brilliant Park.

Studio: Kyoto Animation
Status: Finished
Genres: Comedy , Fantasy

When new transfer student Isuzu asks Seiya Kanie out on a date at gunpoint, he knows something odd is going on. Especially since she wants to go to Amagi Brilliant Park, where the rides are either dangerous or mind-numbingly dull and the only costumed performers who aren’t rude or apathetic are the ones who didn’t show up for work.

So when Isuzu asks Seiya to take over as the park’s new manager, he knows she’s crazy (Well, crazy-er, given the gunpoint thing.). But when Seiya learns that Amagi Brilliant Park is a REAL Magic Kingdom, that the costumed performers aren’t wearing costumes, that they live off the energy created by attendees, and that unless they can attract 250,000 attendees in three months, they’ll lose their jobs and homes… he goes a little crazy himself.

But, even with the aid of scantily clad fairies, giant mice and sniper-trained sheep, can anyone rescue a park that’s sunk so low that its own bus doesn’t stop there anymore? The race is on to get the turnstiles turning and save Amagi Brilliant Park!



Tags: Ensemble Cast , Work , Fairy , Magic , Male Protagonist , Amnesia , Curses , Economics , Urban Fantasy , Animals , Slapstick , Kuudere , Ojou-sama , Parody , Nudity , Disability , Mermaid , Surreal Comedy , Pirates , Dragons , Dungeon , Heterosexual , School , Guns

Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka IV: Shin Shou Meikyuu-hen

Also known as Is It Wrong to Try to Pick Up Girls in a Dungeon? IV.

Studio: J.C.STAFF
Status: Finished
Genres: Action , Adventure , Comedy , Fantasy , Romance

Intrepid adventurer Bell Cranel has leveled up, but he can’t rest on his dungeoneering laurels just yet. The Hestia Familia still has a long way to go before it can stand toe-to-toe with the other Familias of Orario — but before Bell can set out on his next mission, reports of a brutal murder rock the adventuring community! One of Bell’s trusted allies stands accused of the horrible crime, and it’s up to Bell and his friends to clear their name and uncover a nefarious plot brewing in the dungeon’s dark depths.



Tags: Dungeon , Male Protagonist , Gods , Swordplay , Magic , Mythology , Ensemble Cast , Female Harem , Elf , Monster Girl , Primarily Female Cast , Tragedy , Mermaid , Gore , Kemonomimi , Travel , Female Protagonist , Tanned Skin , Kuudere , Cannibalism , Medieval , CGI , Nudity

Rosario to Vampire

Also known as Rosario + Vampire.

Studio: GONZO
Status: Finished
Genres: Comedy , Ecchi , Fantasy , Romance

By a bizzare coincidence, Tsukune Aono has accidentally gotten himself admitted to a youkai academy, a school attended by monsters. Just when he thinks he'll run away from there, he meets the beautiful girl Moka and his mood turns ultra happy. However, she transforms into her true form when the rosary on her chest is taken off, she's a super vampire!

Tags: School , Monster Girl , Male Protagonist , Female Harem , Vampire , Love Triangle , Henshin , School Club , Heterosexual , Witch , Youkai , Succubus , Dissociative Identities , Nudity , Shounen , Kuudere , Mermaid , Bisexual , Meta

Shangri-La Frontier 2nd Season

Also known as Shangri-La Frontier Season 2.

Studio: C2C
Status: Finished
Genres: Action , Adventure , Comedy , Fantasy , Sci-Fi

Rakuro Hizutome only cares about one thing: beating crappy VR games. He devotes his entire life to these buggy games and could clear them all in his sleep. One day, he decides to challenge himself and play a popular god-tier game called Shangri-La Frontier. But he quickly learns just how difficult it is. Will his expert skills be enough to uncover its hidden secrets?



Tags: Video Games , Virtual World , Shounen , Primarily Teen Cast , Male Protagonist , Swordplay , Anthropomorphism , Magic , Martial Arts , E-Sports , Otaku Culture , Hikikomori , Animals , Travel , Pirates , Superhero , Curses , Kemonomimi , Unrequited Love , Real Robot , Mermaid , Gender Bending

Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka IV: Shin Shou Yakusai-hen

Also known as Is It Wrong to Try to Pick Up Girls in a Dungeon? IV Part 2.

Studio: J.C.STAFF
Status: Finished
Genres: Action , Adventure , Comedy , Fantasy , Romance

Bell and Ryu end up in the 37th floor, which is a Deep Floor. The rest of the party are at level 27, facing the level boss Amphisbaena. They have to defeat the level boss, in order to save Bell. At the same time, Bell and Ryu have to find a way to stay alive on a floor with strong monsters while having to avoid the Juggernaut.



Tags: Dungeon , Survival , Revenge , Elf , Ensemble Cast , Tragedy , Male Protagonist , Gods , Primarily Female Cast , Gore , Medieval , Mythology , Travel , Nekomimi , Kemonomimi , Female Harem , CGI , Mermaid , Female Protagonist , Tomboy , Nudity , Monster Girl , Tanned Skin , Skeleton , Maids

Bubble

Also known as Bubble.

Studio: WIT STUDIO
Status: Finished
Genres: Romance , Sci-Fi , Sports , Supernatural

In a Tokyo where gravity has broken, a boy and a girl are drawn to each other...

The story is set in Tokyo, after bubbles that broke the laws of gravity rained down upon the world. Cut off from the outside world, Tokyo has become a playground for a group of young people who have lost their families, acting as a battlefield for parkour team battles as they leap from building to building. Hibiki, a young ace known for his dangerous play style, makes a reckless move one day and plummets into the gravity-bending sea. His life is saved by Uta, a girl with mysterious powers. The pair then hear a unique sound audible only to them. Why did Uta appear before Hibiki? Their encounter leads to a revelation that will change the world.



Note: The anime released on Netflix on April 28, 2022. It screened in theaters on May 13, 2022.

Tags: Parkour , Male Protagonist , Post-Apocalyptic , Urban Fantasy , Tragedy , Female Protagonist , Heterosexual , Primarily Teen Cast , Urban , Dystopian , Aliens , Disability , Coming of Age , Mermaid , Lost Civilization , CGI , Cyberpunk , Super Power , Philosophy , Orphan , Interspecies

Isekai Shokudou

Also known as Restaurant to Another World.

Studio: SILVER LINK.
Status: Finished
Genres: Fantasy , Slice of Life

There is a certain restaurant in the first basement level of a multi-tenant building in one corner of a shopping street near the office district. The historical restaurant, marked by a sign with a picture of a cat, is called "Western Cuisine Nekoya." This restaurant looks completely normal through the week, but on Saturdays, it opens in secret exclusively to some very unique guests. During these hours, doors in various areas of a parallel world open to allow customers of many different races and cultures into the restaurant.



Tags: Food , Work , Isekai , Ensemble Cast , Episodic , Monster Girl , Restaurant , Elf , Urban Fantasy , Demons , Dragons , Primarily Adult Cast , Mermaid , Fairy

Monster Musume no Oisha-san

Also known as Monster Girl Doctor.

Studio: Arvo Animation
Status: Finished
Genres: Comedy , Ecchi , Fantasy , Romance

Here in the town of Lindworm, where humans and monsters coexist, a new young doctor, Glenn, begins another day of perilous medical exams! Whether he's examining deep inside a mermaid's gills, stitching up a flesh golem's thigh, assisting a harpy in laying her eggs, or palpating every last scale on a dragon, Glenn is just doing his best to help these girls whose appearances and bodies are all so completely different... so why does he always end up in such precarious positions with his patients? It's all good, though, because it's strictly for medical purposes! He may come close to suffocating from the pressure of his lamia assistant Saphentite's tail coiling around him, but still, the clinic is open for business in this medical fantasy that explores the physiologies of monster girls as never before!



The first episode premiered a week early on streaming services

Tags: Monster Girl , Medicine , Male Protagonist , Veterinarian , Female Harem , CGI , Primarily Female Cast , Heterosexual , Mermaid , Centaur , Nudity , Ojou-sama , Age Gap , Zombie , Kemonomimi , Dragons , Tanned Skin , Fairy , Tomboy

Seto no Hanayome

Also known as My Bride is a Mermaid.

Studio: GONZO , AIC
Status: Finished
Genres: Comedy , Romance

Michishio Nagasumi's life couldn't be any more normal. In an odd twist of events, during his summer vacation he ends up almost drowning in the sea. Luckily, the cute mermaid Seto San appears to save him. However, San is from a yakuza mermaid family and according to their law, if a human is to catch sight of a mermaid, either he or the mermaid must die. The only other way is for Nagasumi to be taken in as a family member, marrying San. In attempts to save both of their lives, Nagasumi asks for San's hand in marriage. Nagasumi's summer vacation reaped more then what he would expect, as he must now protect San from others finding her secret out.

Tags: Parody , Mermaid , Male Protagonist , School , Gangs , Heterosexual , Yakuza , Chibi , Slapstick , Idol , Female Harem , Shounen , Ensemble Cast

Leadale no Daichi nite

Also known as In the Land of Leadale.

Studio: Maho Film
Status: Finished
Genres: Adventure , Fantasy

After being put on life support after a tragic accident, Keina Kagami's only freedom comes from the VRMMO RPG Leadale. One day her life support system shuts off and Keina passes away. When she wakes up, she finds herself in Leadale two hundred years in the future. As the high elf Cayna, with lost skills but incredible stats, she must forge relationships with the residents of this new world... which, shockingly, include the ""children"" characters she designed herself! A leisurely adventure tale is about to begin, featuring a girl transported to a game world and the smiles and tears she shares with her quirky companions!



Tags: Isekai , Female Protagonist , Virtual World , Video Games , Magic , Adoption , Parenthood , Reincarnation , Elf , Iyashikei , Super Power , Primarily Female Cast , Chibi , Cute Girls Doing Cute Things , Gender Bending , Travel , Medieval , Mermaid , Zombie

Yuusha Party ni Kawaii Ko ga Ita no de, Kokuhaku Shitemita.

Also known as There was a Cute Girl in the Hero’s Party, so I Tried Confessing to Her.

Studio: Gekkou
Status: Finished
Genres: Adventure , Comedy , Fantasy , Romance

Reincarnated as a mid-tier demon, Youki had one job: Crush the hero’s party. Then he saw the party’s priestess, Cecilia, and fell for her hard. Now this lovestruck demon vows to confess his feelings, even if it means betraying the Demon King. Will love bloom between these two sworn enemies?



Tags: Demons , Heterosexual , Chuunibyou , Reincarnation , Medieval , Isekai , Anti-Hero , Magic , Mermaid , Maids , Dullahan , Slapstick , Femboy , Rehabilitation , Monster Girl , Monster Boy , Cute Girls Doing Cute Things

Fujimoto Tatsuki 17-26

Also known as Tatsuki Fujimoto 17-26.

Studio: ZEXCS , Lapin Track , 100studio , Studio Kafka , P.A.WORKS , GRAPH77
Status: Finished
Genres: Action , Comedy , Drama , Romance , Sci-Fi , Slice of Life , Supernatural

An anthology series adapting 8 short stories created by manga artist Tatsuki Fujimoto between ages 17 and 26.

1) A Couple Clucking Chickens Were Still Kickin' in the Schoolyard (Dir. Seishirou Nagaya, ZEXCS)
2) Sasaki Stopped a Bullet (Dir. Nobukage Kimura, Lapin Track)
3) Love is Blind (Dir. Nobuyuki Takeuchi, Lapin Track)
4) Shikaku (Dir. Naoya Ando, GRAPH77)
5) Mermaid Rhapsody (Dir. Tetsuaki Watanabe, 100Studio)
6) Woke-Up-as-a-Girl Syndrome (Dir. Kazuaki Terasawa, Studio Kafka)
7) Nayuta of the Prophecy (Dir. Tetsuaki Watanabe, 100Studio)
8) Sisters (Dir. Osamu Honma, P.A.WORKS)

Note: This anime had a pre-release world premiere at the "Global Stage Hollywood 2025" film festival on October 5, 2025. A general two-week theatrical run in Japan divided into two parts released on the same day October 17, 2025. The anime series later streamed worldwide in Amazon Prime Video on November 8, 2025.

Tags: Episodic , Anthology , Surreal Comedy , Urban Fantasy , Female Protagonist , School , Male Protagonist , Magic , Urban , Family Life , Aliens , Found Family , Heterosexual , Dystopian , Assassins , Coastal , Monster Girl , Shapeshifting , Gender Bending , Nudity , Mermaid , Vampire , Drawing , LGBTQ+ Themes , Language Barrier , Time Skip , Disability , Transgender , Shounen , Fugitive , Henshin , Space , Modeling , Kaiju

Watashi wo Tabetai, Hitodenashi

Also known as This Monster Wants to Eat Me.

Studio: Studio Lings
Status: Finished
Genres: Drama , Horror , Psychological , Romance , Supernatural

Hinako lives alone by the sea, quietly drifting through life after losing her family years ago. One day, a mermaid named Shiori saves her from a monster and says she’s come to eat her—just not yet. Until then, Shiori will stay by her side and keep her safe. In that moment, a deep hope swells in Hinako: Maybe this girl can finally grant her the ending she’s been waiting for.

Tags: Suicide , Monster Girl , Female Protagonist , Youkai , Primarily Female Cast , Memory Manipulation , Tragedy , Orphan , Mermaid , Coastal , Mythology , Yuri , Interspecies , Rural , LGBTQ+ Themes , Seinen , Gore , Shapeshifting , Body Image , School , Gyaru , Urban Fantasy , Tsundere

Isekai Yururi Kikou: Kosodate Shinagara Boukensha Shimasu

Also known as A Journey Through Another World: Raising Kids While Adventuring.

Studio: EMT Squared
Status: Finished
Genres: Adventure , Fantasy , Slice of Life

After a god accidentally slays him, Takumi’s reborn with new skills in a monster-filled forest where he stumbles upon twins. They’re sweet, adorable, and super strong! Won over instantly, he names them Alan and Elena, becomes their guardian, and joins an adventurers’ guild to provide for his new family. And so starts his chill life of adventure, watching over Alan and Elena’s growth!



Tags: Found Family , Parenthood , Isekai , Twins , Magic , Adoption , Creature Taming , Primarily Adult Cast , Iyashikei , Male Protagonist , Food , Gods , Shapeshifting , Travel , Animals , Mermaid , Femboy , LGBTQ+ Themes , Primarily Child Cast

Okiraku Ryoushu no Tanoshii Ryouchi Bouei: Seisan-kei Majutsu de Na mo na Kimura wo Saikyou no Jousai Toshi ni

Also known as Easygoing Territory Defense by the Optimistic Lord.

Studio: NAZ
Status: Finished
Genres: Adventure , Fantasy

Van, fourth son of a marquis, is just a toddler when he realizes he’s been reincarnated. Thanks to his literal lifetime of knowledge, he’s raised as a child prodigy—until his production magic manifests, and it’s the last thing his snooty mage family wants to see! His disappointed father banishes him to a podunk town on the verge of collapse, yet Van can only see the place’s potential. Can our hero’s bastion of battlements build a better life than battle magic ever could?!



Tags: Male Protagonist , Reincarnation , Kingdom Management , Magic , Isekai , Rural , Medieval , Estranged Family , Cute Boys Doing Cute Things , Maids , Female Harem , Time Skip , Slavery , Dungeon , Class Struggle , Mermaid , Exiled