Shows Like Blue Submarine No. 6
If you loved Blue Submarine No. 6's Animation and Sci-Fi & Fantasy storytelling, these series deliver a similar experience — chosen for tone, narrative quality, and viewer satisfaction. Each includes where to stream it now.
★ Top Picks

Arpeggio of Blue Steel: Ars Nova
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.

Nadia: The Secret of Blue Water
In mankind's grasp for the future, a sinister foe known only as Gargoyle 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.

Sgt. Frog
Alien frogs come to take over the planet & get into all kinds of trouble while living under the roof of a small family.

Yakitori: Soldiers of Misfortune
With Earth colonized by a superior alien civilization, Akira's only chance at a better future is to enlist as an expendable Yakitori foot soldier.

SWORD GAI: The Animation
The swordsmith Amon accidentally comes across an infant and its dead mother in the forest. Although he is initially overwhelmed by the situation, he finally decides to take the boy with him and thus save him from certain death. Ten years after this fateful encounter, the boy from that time, Gai, is apprenticed to Amon. While making a sword, however, there is a tragic accident in which Gai loses his right arm. Amon then decides to use a sword called Shiryuu to make an artificial arm for Gai. Thus, it begins…

The Seven Deadly Sins: Four Knights of the Apocalypse
As a prophecy of doom unfolds on the peaceful land of Britannia, a purehearted boy sets out on a journey of discovery — and revenge.

Buso Renkin
The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream; however, he soon finds out that dream wasn't a dream at all when a giant serpentine monster attacks him and his sister. Tokiko Tsumura, the girl he saved, explains that the monster is a homunculus. Kazuki had been attacked and killed by it when he was rescuing her; however, she, feeling responsible for him, revived him by placing a Kakugane medallion in his chest, serving as a replacement heart.

Gachiakuta
Accused of murder and thrown into the Pit, a young orphan joins a group of monster fighters with special powers to uncover the truth and seek vengeance.
More Shows Like Blue Submarine No. 6

Maison Ikkoku
Godai is a ronin (someone who has failed university entrance exams) living in a run down apartment house called Maison Ikkoku. Among the other residents are the nosy Ichinose, the sexy Akemi Roppongi, and the mysterious Yotsuya. The others are given to having wild parties which makes it difficult for Godai to study. Into this mayhem comes the recently widowed Kyoko as the new live-in manager. Godai falls for her, but doesn't have the nerve to tell her. As time passes, their relationship slowly develops amid life at Maison Ikkoku, despite all sorts of romantic hurdles.

Birdy the Mighty: Decode
While pursuing fugitives the Space Federation police officer Birdy Cephon Altera finds herself on Earth.

BBK/BRNK
It’s been ten years since Azuma Kazuki has been in Japan, and upon his arrival he is taken prisoner by a group of armed men. Azuma is saved by his childhood friend, Kogane Asabuki, thanks to a living weapon she wields on her right hand, known as a Bubuki. Learning about these weapons, Azuma becomes a Bubuki wielder himself and sets out on a journey.

GANTZ
If you are chosen by the bizarre black sphere known as the Gantz, you are already dead—yet you might be able to reclaim your mortality. First, the Gantz demands that you undertake brutal missions of madness, killing aliens hidden among the population. It is your only chance and you have no choice. You must play this disturbing game. And if you die again—and you likely will—it’s permanent.

Galaxy Express 999
In a distant future, Tetsuro is a human boy who wants his body replaced with a robotic one. This is possible, but to do so he has to reach the Immortal Planet onboard the space train Galaxy Express 999. Maetel, a beautiful and mysterious blonde woman dressed in Russian style, joins him in the long journey through space. Every episode sees our heroes arriving in a new planet's space train station.

7SEEDS
Shy Natsu awakens as part of a group chosen to ensure the survival of humanity. Together, they have to survive on a changed Earth.

KanColle: Kantai Collection
Set in a world where humanity has lost control of the oceans to the “deep sea fleet,” the only hope to counter this threat are the Kanmusu, a group of girls who possess the spirit of Japanese warships. The story revolves around Fubuki, a destroyer who comes to the Chinjufu base to train with other Kanmusu. Watch as their stories unfold!

Kemonozume
Creatures known as Shokujinki have been secretly living alongside humans for hundreds of years. Though they may look like humans, Shokujinki are able to transform into uncontrollable beasts with gigantic claws and consume humans to survive. The equally secretive Kifuuken dojo specializes in killing Shokujinki by cutting off their arms, and is the only force preventing unchecked Shokujinki domination. Toshihiko Momota, the son of the leader of the Kifuuken, is instantly charmed by a mysterious woman named Yuka Kamitsuki. Their relationship is complicated, however, because unbeknownst to them both, Yuka is a Shokujinki and Toshihiko is sworn to kill her. Meanwhile, the Kifuuken is having a crisis of confidence as Toshihiko's brother Kazuma pushes against tradition and tries to modernize the Kifuuken. As emotions are strained and the secrets of both the past and present are revealed, who will live, and who will be eaten?

Code:Breaker
Sakurakouji Sakura is a girl who appears modest and graceful but in reality is skilled in martial arts. After witnessing a boy burning people with his blue flame, she is startled to see that the same boy is a transfer student, Oogami Rei. Oogami is a Code Breaker, one who does not exist. He is a seemingly cold-blooded killer who follows the principle of an eye for an eye, to use evil against evil. Convinced that killing is not right, Sakurakouji sets out to stop him and penetrate his icy heart.

Tengoku Daimakyo
In the year 2024, the world has collapsed. Grotesque monsters lurk amongst the ruins of Japan, while remaining people scrape together what they can to survive. Kiruko, an odd-job girl in Nakano, accepts a mysterious woman's dying wish to take a boy named Maru to a place called Heaven. Maru is convinced that there will be a boy there who looks exactly like him.

Monster Farm
Genki is a boy who loves playing the Monster Rancher games and one day he's somehow transported into the world of the video game where he meets the girl Holly and the monsters Mochi, Suezo, Golem, Tiger and Hare. Together, they are searching for a way to revive the Phoenix, which is the only monster capable of stopping the evil Moo.

Girls Bravo
Small for his age, Yukinari has been bullied and abused by girls all his life. Now in high school, he has developed a rare condition: whenever girls touch him, or even come close, he breaks out in hives. Imagine his surprise, when he is suddenly transported to the city of Seiren on a mystic world invisibly orbiting the Earth, and populated with vast numbers of women and very few men. Fortunately, he has a new friend, Miharu-chan, whose touch inexplicably doesn't affect him.
Why These Shows Are Similar
These recommendations share core qualities with Blue Submarine No. 6 (1998): Animation and Sci-Fi & Fantasy themes, similar pacing, and comparable production quality. NoBadPicks uses TMDB collaborative filtering, genre matching, and AI analysis to surface series most likely to resonate with fans of Blue Submarine No. 6.
See full details for Blue Submarine No. 6 (1998)