GuessAnime.

1. Die Melusine

My serenade, my Kieron.

During one of his conquests, the heartless Archduke Kieron discovers Melusine, a mermaid in captivity. Their bond deepens, but according to legend, mermaids must kill their lovers to return to the sea. Melusine cannot bear to harm Kieron and leaves instead. What cruel fate awaits the lovers?

Die Melusine is currently publishing .

2. Nagisa no Saameido

Wataru is a lonely boy who lost his parents in an accident. For some reason, there is one maid—named Kosame, who has been by his side since he was little. Set in a unique coastal fishing village with rows of boathouses, a love story of eternal love begins!

Shark Maid of the Shore is finished and has 2 Volumes and 13 Chapters. It is also Known as: 渚のサーメイド, Nagisa no Shark Maid, Nagisa no Sāmeido, SharMaid

3. Geomeun Ineo

She just wants to start fresh so she can graduate in peace. She just wants to leave behind all the bad memories — her sleepwalking, the trauma from being bullied at school — all of it. She did everything she could to keep to herself, but the class president, Hae-On, just won't leave her alone. One day, when Seul-Bi visits the local lake Hae-On recommended, she comes across something she never imagined seeing in her wildest dreams: a wild, dark mermaid.

Dark Mermaid is currently publishing .

4. Watashi wo Tabetai, Hitodenashi

High school girl Hinako is living a quiet life in a seaside town, but she feels somewhat detached from her friends during the summer months when she is reminded of when her family died years ago. One day, she meets Shiori, a mysterious girl who reminds her of the ocean, especially when it comes to her translucent blue eyes, but Shiori soon reveals that she is actually a mermaid who has been looking for Hinako for a long time.

Source: MU

A Monster Wants to Eat Me is currently publishing . It is also Known as: 私を喰べたい、ひとでなし, WataTabe

5. Utakata no Minato

While everyone knows the story of the sea, no one knows the story of the deep sea.

"Minato Wadatsumi" was born and raised in a port town, but unfortunately for him, he has an extreme phobia of fish.

One day Minato comes across a fish out of water that changes his life.

Minato of the Foam is finished and has 4 Volumes and 23 Chapters. It is also Known as: ウタカタノミナト, Utakata no Minato

6. Swimming Lessons for a Mermaid

Choa is a mermaid who can't swim! Discouraged, she trades the ocean for a pair of human legs. But when the star of the high school swim team finds out her secret, he offers her the chance to prove her family wrong: free swimming lessons for a mermaid!

Swimming Lessons for a Mermaid is finished and has 7 Volumes and 101 Chapters. It is also Known as: Swim Classes for a Mermaid

7. School Ningyo

Two girls go hunting for mermaids to win their true love. Featuring very nontraditional mermaids.

School Mermaid is finished and has 5 Volumes and 32 Chapters. It is also Known as: スクール人魚, School Ningyo

8. See you later, Mermaid

After meeting in a seaside town during their solo-travels, Kazushi Kimijima and Tatsumi Higaki find themselves as patrons of the same inn. The friendly Kazushi invites the pensive Tatsumi for a drink as a favor for his help during a prior sand-in-eye plight. Kazushi finds out little by little why his new acquaintance is so apprehensive. What will he do when Tatsumi unveils his deepest secret and with it, his deepest fear?

See you later, Mermaid is finished and has 1 Volumes and 6 Chapters. It is also Known as: See you later,Mermaid, シーユーレイター、マーメイド, See you later, Mermaid

9. Seto no Hanayome

A young boy gets saved from drowning by a mermaid but, according to mermaid law, if a human sees a mermaid's true form, both have to be killed. The only solution to the problem is for him to marry her. But can they keep her secret from being found out?

Chapter count includes 3 special chapters.

Volume 5 contains the side story "Senjou no Merry Christmas" .

Volume 12 contains the side story "Toki wo Kakeru Shoujo" .

Volume 13 contains the side story "Mission:Impossible 2" .

My Bride is a Mermaid is finished and has 16 Volumes and 79 Chapters. It is also Known as: 瀬戸の花嫁, SetoYome, The Inland Sea Bride

10. Mina Soko ni Ite

In this town's lake, a man-eating mermaid is said to have been sunk to the bottom.

Today, the mermaid still wanders the town in search of a companion, stirring up the restless hearts of the people.

A modern day tale of foolish girls who can't survive in clear water.

Mina Soko ni Ite is finished and has 3 Volumes and 14 Chapters. It is also Known as: みなそこにて, Because the girls are all childish, At the Bottom of the Water

11. Abyss Azure no Zainin

For many centuries, merfolk have lived in the depths of the ocean—4,000 meters below the surface—where humanity cannot find them. However, one mermaid's life is turned upside-down when her best friend falls for a human.

A Sinner of the Deep Sea is currently publishing . It is also Known as: アビスアジュールの罪人, Sinner of the Azure Abyss, Sinner in The Seabed

12. Ningyohime no Gomen ne Gohan

When Mermaid Princess Ela's fish friend is captured and turned into a delectable meal, she goes to land to mourn his death and aid his passing into the great beyond... If only that was the end of the story. Follow Ela as she discovers the wonders of seafood.

The Mermaid Princess's Guilty Meal is finished and has 7 Volumes and 41 Chapters. It is also Known as: 人魚姫のごめんねごはん, Forbidden Fish is Sweeeetest!!!

13. Mermaid Boys

The curious prince of the mermaid kingdom, Naru, sees a human girl, Nami, and falls in love with her at first sight. Yearning for her love, he seeks a witch to turn himself into a human! But to gain this form, he has to exchange "something" in return...

Mermaid Boys is currently publishing . It is also Known as: マーメイド・ボーイズ, Mermaid Boys

14. The Fish I Loved

Yana Jeong, a typical girl, runs into a strange man who's out of breath during one of her part-time jobs. Little did she know that this was Kai Shim, the son of the CEO of a large jewelry corporation called Inoroo, who also happens to be a merman. Yana coincidentally runs in Kai again when she ends up working as a waitress at his birthday party, where a series of accidents lead to the two of them meeting each other again. Will Yana be able to keep up with these unexpected events happening one after another?

The Fish I Loved is finished and has null Volumes and 60 Chapters. It is also Known as: My Dear Fishmen, The Mermaid I Loved,, Naega Saranghan Mulgogi, 恋上人鱼, 私が愛した人魚

15. Hoetjipsajangui Cheotsarangeun Ineoimnida

The restaurant owner fell in love at first sight with... A mermaid!

Hae-Beom is often mistaken for a gangster due to his stern appearance. Sang-A, a customer who helped Hae-Beom, is a mermaid. Sang-A needs human saliva in order to get legs, so Hae-Beom selflessly offers a kiss... Once a day, every day.

Sang-A just needs legs... But will he like me someday?

The First Love of the Sushi Restaurant Owner is a Mermaid is finished and has null Volumes and 11 Chapters.

16. Ningyo Series

This is Rumiko Takahashi at her darkest, but her trademark humor and romance also pop up in this three-volume series. Legend has it that if a human eats a mermaid's flesh, they will be granted eternal life. But is that a blessing or a curse? Immortal lovers Yuta and Mana travel through Japan and the centuries longing for a normal life. On their journey, they meet others who have consumed the flesh of a mermaid in hope of becoming immortal. But the powerful substance affects each person differently. Yuta and Mana are two of the lucky ones. Others are fated to die or transform into a savage monster, a "lost soul."

Ningyo Series is finished and has 3 Volumes and 16 Chapters. It is also Known as: 人魚シリーズ, Mermaid Forest, Mermaid's Gaze, Mermaid's Scar, Ningyo no Mori, Mermaid Saga

17. Okisaki-sama to Ningyohime no Ohanashi

A selfish princess comes across an injured mermaid and decides to nurse her back to health, but not out of kindness - the princess intends to sell the mermaid and make a profit once she's healed! Strangely, the mermaid doesn't seem to mind this at all. Time goes by for the two of them until the princess tells the mermaid that she has changed her mind...

The Story of the Princess and the Little Mermaid is finished and has 1 Volumes and 1 Chapters. It is also Known as: お妃様と人魚姫のお話, Tale of a Princess and the Little Mermaid, La Storia della Principessa e della Principessa Sirena

18. Kyuukou, Escape, Mermaid.

A fleeting yet fateful meeting by the sea may be all it takes to change one girl's life forever.

Hurry, Escape, Mermaid. is finished and has null Volumes and 1 Chapters. It is also Known as: 急行、エスケープ、マーメイド。, Kyuukou, Escape, Mermaid.

19. Dragon's Crown

The manga is set primarily in the Kingdom of Hydeland and revolves around a legendary relic, the titular Dragon's Crown, and the quest to retrieve it. A mysterious coven of magic-users with influence in even the highest levels of government seek the treasure and have used their sorcery to link long-forgotten ruins, dangerous labyrinths, and many other areas together in order to search for it.

Note: includes a bonus epilogue chapter.

Dragon's Crown is finished and has 2 Volumes and 14 Chapters. It is also Known as: ドラゴンズクラウン, Dragon's Crown

20. Mio no Na no Moto ni

Princess Mio is betrothed to Prince Chika. They’ve never met, however, and he doesn’t know her secret—she’s a mermaid! When her tutor Yuri takes her out of the castle to meet her subjects, Mio begins to accept her true self. But Yuri has a secret too... And when Mio tells her father the king she wants to live life openly as a mermaid, he punishes her. How can she live her truth?

Note: Chapter count includes seven additional chapters, one in each volume.

In the Name of the Mermaid Princess is finished and has 7 Volumes and 33 Chapters. It is also Known as: ミオの名のもとに, Im Namen der Meerjungfrau