8 Anime Series That Take Place Underwater/By The Sea | Bakaklub

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8 Anime Series That Take Place Underwater/By The Sea

The whole underwater concept is one of my favorites, the theme is just so beautiful. After watching Nagi no Asukara, I dedicated myself to finding similar anime that feature the sea and all the beauty that comes with it. There is just something extra about it, that beats the normal earth bound plots. In this list, I will recommend some anime series that take place underwater or are by the sea.


1. Nagi no Asukara

Anime underwater

Studio: P.A. Works

Episodes: 26

Genre: Romance, Fantasy, Drama

Synopsis: Long ago, all humans lived beneath the sea. However, some people preferred the surface and abandoned living underwater permanently. As a consequence, they were stripped of their god-given protection called “Ena” which allowed them to breathe underwater. Over time, the rift between the denizens of the sea and of the surface widened, although contact between the two peoples still existed.

The series shows the story of Hikari Sakishima and Manaka Mukaido, along with their childhood friends Chisaki Hiradaira and Kaname Isaki, who are forced to leave the sea and attend a school on the surface. There, the group also meets Tsumugu Kihara, a fellow student and fisherman who loves the sea. Hikari and his friends’ lives are bound to change as they have to deal with the deep-seated hatred and discrimination between the people of sea and of the surface, the storms in their personal lives, as well as an impending tempest which may spell doom for all who dwell on the surface.

This series is definitely one of the best out there. The story is amazing, the art is beautiful and everything just fits in well. Even though not all characters are fully developed, it’s still a great series, be sure to watch it!

A Lull in the Sea Set 1 DVD – $42.49
from: Right Stuf, Inc.


2. Nadia: Secret of Blue Water

Anime underwater

Studio: Gainax

Episodes: 39

Genre: Historical, Adventure, Comedy

Synopsis: The world is on the pinnacle of great discoveries in technology. In mankind’s grasp for the future, a sinister foe known only as Gargoyle, obsessed with restoring the former Atlantean empire to the glory it once held, begins his plans to take over the world. Nadia, with the help of a young inventor, Jean Ratlique, and Captain Nemo of the submarine Nautilus, must fight to save the world from Gargoyle and Neo-Atlantis.

Really entertaining series, you’ll never get bored. Nadia is so cute!

Nadia The Secret of Blue Water DVD – $59.99
from: Right Stuf, Inc.
Nadia The Secret of Blue Water DVD


3. Amanchu!

anime underwater

Studio: J.C. Staff

Episodes: 12

Genre: Slice of life, Comedy

Synopsis: Hikari Kohinata is a cheerful 15-year-old girl who lives near the ocean and she spends much of her time diving as a result. On her first day of high school, she meets a teacher who also likes scuba diving. There’s also a 16-year-old classmate, Futaba, who gets dragged along in Hikari’s maelstrom as soon as they meet at school.

It’s a beautiful story of friendship and positivity!


4. Tsuritama

anime underwater

Studio: A- 1 Pictures

Episodes: 12

Genre: Slice of life, Fantasy, Fishing

Synopsis: Yuki Sanada is a socially awkward young man who lives with his grandmother. Due to her job, they must move around a lot. This means Yuki has difficulty forming lasting relationships with his peers, or relationships at all, for that matter. His fear of social interaction is so great that when asked to make a greeting or parting speech in his classes, Yuki often freezes. As if drowning, he blacks out from the present, only able to focus on his certain ridicule. However, Yuki’s life changes forever when he moves to Enoshima and meets an odd boy named Haru, who claims to be an alien. Haru wields a questionable water gun and fish bowl, and has a tendency to speak with the beta fish inside it. He immediately latches onto Yuki as a friend, completely disregarding any complaints Yuki might have about this. Together, Haru and Yuki also snowball a fellow classmate and fisherman named Natsuki Usami into Haru’s schemes.

tsuritama DVD – $44.99
from: Right Stuf, Inc.
tsuritama DVD

6.Arpeggio of Blue Steel

anime underwater


Episodes: 12

Genre: Action, Sci-fi

Synopsis: By 2039, global warming had caused sea levels to rise and large amount of territory to be lost. As though in response, a mysterious group of warships clad in mist, “the Fleet of Mist,” appeared in every corner of the ocean, and began attacking human ships. In spite of humanity mustering all their strength, they were utterly defeated by the Mist’s overwhelming force. All of humanity’s trade routes were blockaded by the Fleet of Mist, their political economy was destroyed, and the human race was steadily beaten down.

Seven years later, the Fleet of Mist’s submarine I-401 appears before cadet Gunzo Chihaya. The humanoid life form that pilots the sub, who should be their enemy, is instead offering her services to mankind.

Arpeggio of Blue Steel Blu-ray/DVD – $44.96
from: Right Stuf, Inc.
Arpeggio of Blue Steel Blu-ray/DVD


7. Gargantia on the Verdurous Planet

anime underwater

Studio: Production I.G

Episodes: 13

Genre: Mecha, Action, Sci-fi

Synopsis: In the distant future, a majority of humans have left the Earth, and the Galactic Alliance of Humanity is founded to guide exploration and ensure the prosperity of mankind. However, a significant threat arises in the form of strange creatures called Hideauze, resulting in an interstellar war to prevent humanity’s extinction. Armed with Chamber, an autonomous robot, 16-year-old lieutenant Ledo of the Galactic Alliance joins the battle against the monsters. In an unfortunate turn of events, Ledo loses control during the battle and is cast out to the far reaches of space, crash-landing on a waterlogged Earth.

On the blue planet, Gargantia—a large fleet of scavenger ships—comes across Chamber and retrieves it from the ocean, thinking they have salvaged something of value. Mistaking their actions for hostility, Ledo sneaks aboard and takes a young messenger girl named Amy hostage, only to realize that the residents of Gargantia are not as dangerous as he had believed. Faced with uncertainty, and unable to communicate with his comrades in space, Ledo attempts to get his bearings and acclimate to a new lifestyle. But his peaceful days are about to be short-lived, as there is more to this ocean-covered planet than meets the eye.

anime underwater

Gargantia on the Verdurous Planet DVD – $40.34
from: Right Stuf, Inc.
Gargantia on the Verdurous Planet DVD

8. High School Fleet

anime by the sea

Studio: production IMS

Episodes: 12

Genre: Action, Military

Synopsis: Living by the sea, protecting the sea, and journeying across the sea,are the Blue Mermaids.

Because of a shift in tectonic plates around 100 years ago, Japan lost much of its area to submergence. To preserve Japan’s territories, coastal cities sprung up, one after the other. Eventually, they became marine cities, and along with the expansion of sea-lanes to connect them, the need arose for a sizable staff to protect the seas.

At the same time, maritime jobs were becoming more popular among women. Hence, the Blue Mermaids, tasked with keeping the seas safe, had become every female student’s dream job. This is when childhood friends Akeno Misaki and Moeka China enroll in a marine high school in Yokosuka, along with other girls who share their goal of becoming a Blue Mermaid.

anime by the sea




And that was the list of anime series that take place underwater or by the sea. Be sure to check them out, give them some love! All the series listed have very good qualities, from the plot to the oh-so beautiful art style. Thanks so much for reading and I’ll see you in the next post. 🙂


Disclaimer: Anime synopsis obtained from Myanimelist.net

This post may contain affiliate links.

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