Anime Like Siren
If you loved Siren's Sci-Fi & Fantasy and Drama storytelling, these anime deliver a similar experience — selected for art style, narrative depth, and emotional impact. Each includes where to stream it now.
★ Top Picks

Mako: Island of Secrets
Real-life mermaids, Sirena, Nixie and Lyla are part of a mermaid pod, which lives in the waters of Mako Island. As young members of the pod, it is their job to protect the Moon Pool and guard it from trespassers. But on the night of a full moon, the mischievous mermaid girls neglect their duties. Sixteen-year-old land-dweller Zac enters the Moon Pool and forms a special connection with Mako. Zac is given a fish-like tail and amazing powers. The mermaid pod is forced to leave Mako, leaving behind the three mermaid girls, cast out of the pod. They know there's only one way they will be allowed to rejoin the pod: They must get legs, venture onto land and take back Zac's powers – or risk being outcasts forever.

H2O: Just Add Water
H2O: Just Add Water revolves around three teenage girls facing everyday teen problems with an added twist: they cope with the burden of growing a giant fin and transforming into mermaids whenever they come in contact with water.

NOS4A2
A young Victoria "Vic" McQueen discovers she has the power to unlock portals that help her find lost objects. As she delves further into this hidden universe, she encounters many other "inscape travelers" - some benevolent, and some who have been corrupted by their power. When Vic encounters Charlie Manx, an immortal who stays that way by feeding off of the souls of children, she makes a sworn enemy of Manx.

Psi Factor: Chronicles of the Paranormal
Psi Factor: Chronicles of the Paranormal is a Canadian science fiction television series that surrounds a scientific team that deals with all manner of paranormal phenomena around the world; from alien abductions to possessions. The organization depicted in the series is loosely inspired by a real-life scientific organization. While locations in the series took place worldwide, the series was primarily filmed in and around Toronto, Ontario, Canada, and aired 88 episodes over four seasons from 1996 to 2000.

The Nevers
In the last years of Victoria's reign, London is beset by the "Touched": people — mostly women — who suddenly manifest abnormal abilities, some charming, some very disturbing. Among them are Amalia True, a mysterious, quick-fisted widow, and Penance Adair, a brilliant young inventor. They are the champions of this new underclass, making a home for the Touched, while fighting the forces of… well, pretty much all the forces — to make room for those whom history as we know it has no place.

Monsterland
In this fantasy anthology series, encounters with mermaids, fallen angels and other strange beasts drive broken people to desperate acts in an attempt to repair their lives, ultimately showing there is a thin line between man and beast.

The War Between the Land and the Sea
When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. With the entire population at risk, UNIT step into action as the land and sea wage war.

Battlestar Galactica
When the 12 Colonies of Man are wiped out by a cybernetic race called the Cylons, Commander Adama and the crew of the battlestar Galactica lead a ragtag fleet of human survivors in search of a "mythical planet" called Earth.
More Anime Like Siren

The Little Mermaid
Disney's The Little Mermaid is an American animated television series produced by Walt Disney Television Animation based on the 1989 Disney film of the same name. It features the adventures of Ariel as a mermaid prior to the events of the film. This series is the first Disney television series to be spun off from a major animated film. Some of the voice actors of the film reprise their roles in the series, among them Jodi Benson as Ariel, Samuel E. Wright as Sebastian, Kenneth Mars as King Triton, and Pat Carroll as Ursula.

Bloom
One year after a devastating flood kills five locals in an idyllic country town, a mysterious new plant appears with the power to restore their youth.

Debris
Two federal agents from two different continents, and two different mindsets, must work together to investigate when wreckage from a destroyed alien spacecraft has mysterious effects on humankind.

Surface
A marine biologist, an insurance salesman and a teenage boy find their lives changed when a new and often dangerous sea life species emerges, while the government tries to keep the affair under wraps.

Resurrection
The people of Arcadia, Missouri are forever changed when their deceased loved ones suddenly start to reappear.

Once Upon a Time in Wonderland
In Victorian England, the young and beautiful Alice tells a tale of a strange new land that exists on the other side of a rabbit hole. Thinking Alice insane, her doctors aim to make her forget everything. While Alice is ready to put it all behind her, she knows this world is real. In the nick of time, the Knave of Hearts and the White Rabbit save her from a doomed fate. Together, the trio tumble down the rabbit hole to Wonderland, where nothing is impossible.

Tidelands
Ex-con Cal McTeer's return to her hometown of Orphelin Bay blows the lid off a generations-long conspiracy of silence around murder, drugs and Sirens.

Fantasy Island
A magical island hosted by Mr Roarke and Tattoo where weekly guests learn valuable life lessons in their pursuit of fulfilling their dreams. Not all dreams are fulfilled as expected.

Don't Look Deeper
In near-future California, high school senior Aisha learns a dark secret about herself. She goes from dreams of graduation and college...to suddenly running for her life.

La Brea
An epic adventure begins when a massive sinkhole opens in the middle of Los Angeles, pulling hundreds of people and buildings into its depths. Those who fell in find themselves in a mysterious and dangerous primeval land, where they have no choice but to band together to survive. Meanwhile, the rest of the world desperately seeks to understand what happened. In the search for answers, one family torn apart by this disaster will have to unlock the secrets of this inexplicable event to find a way back to each other.

Fantasy Island
This contemporary version of the classic drama series delves into the “what if” questions that keep us awake at night. Each episode tells emotional, provocative stories about people who walk in with a desire, but end up reborn to themselves through the magical realism of Fantasy Island.
Why These Anime Are Similar
These recommendations share core qualities with Siren (2018): Sci-Fi & Fantasy and Drama themes, comparable animation style, and similar narrative pacing. NoBadPicks uses TMDB collaborative filtering, genre matching, and AI analysis to surface anime most likely to resonate with fans of Siren.
See full details for Siren (2018)
