A serviceable fantasy-adventure with strong animation, brisk action, and enough monster-hunting charm to keep Witcher fans engaged, but the story is thin, familiar, and often feels more like a polished side quest than a must-see chapter.
The Witcher: Sirens of the Deep
Where to watch: Buy
Movie · Animation · Fantasy
Mon · 1h 32m
Director: Kang Hei Chul
Starring: Doug Cockle, Joey Batey, Christina Wren
Overview
When human sailors are attacked by mysterious creatures of the deep, only one person can stop the war between land and sea: the Witcher, Geralt of Rivia.
Director
Kang Hei Chul
Cast
Doug Cockle, Joey Batey, Christina Wren
Curator Review
Verdict
A serviceable fantasy-adventure with strong animation, brisk action, and enough monster-hunting charm to keep Witcher fans engaged, but the story is thin, familiar, and often feels more like a polished side quest than a must-see chapter.
Best for
Witcher fans who mainly want Geralt back in action
Viewers who prioritize animated fight choreography over deep plotting
Fantasy audiences in the mood for a sea-creature/mermaid conflict
Fans of lighter, pulpy monster-hunting adventures
Skip if
You want the franchise at its most ambitious or emotionally rich
You’re tired of generic fantasy politics and familiar romance beats
You dislike adaptations that lean childish despite bloody violence
You’re not already invested in The Witcher universe
Overview
Sirens of the Deep is the kind of animated fantasy that knows exactly how to move, even when the story itself feels familiar. The action is lively, the underwater setting gives it a clean visual hook, and Geralt’s return in the original voice is a genuine draw for fans who missed that specific version of the character.
Worth noting
What holds it back is the sense that the movie is content to remix better-known fairy-tale and fantasy ideas rather than build something surprising. The central conflict between land and sea has enough momentum to stay watchable, but the emotional beats and romance are predictable, and the tone can wobble between grim violence and almost kiddie-level whimsy.
Bottom line
As a standalone fantasy adventure, it’s fine. As a Witcher story, it feels more like a competent detour than an essential entry. If you’re already on board for the world, the animation and action make it easy enough to enjoy; if you’re hoping for something sharper or more original, this one may leave you wanting more.
Top Letterboxd reviews
Kit Lazer (2.5★) · 357 likes
I love The Witcher and I’ll watch anything to do with it gleefully. I just wish more of the adaptations were good. Nightmare of the Wolf was awesome. This is a little too Scooby Doo and Little Mermaid for me. Super cool they got the OG voice actor, though.
TheFreshBeef (3★) · 236 likes
knew the mermaid princess and the human prince would be together forever the moment she said: "I liked you better when we only fucked instead of talked"
L3w1s (2.5★) · 142 likes
THEY GAVE GERALT A BUSH
carter.mov (3★) · 126 likes
Halfway into the movie, Geralt makes a “Lover? I hardly know her!” joke. That was the movie’s peak; take from that what you will.
Mister Cap (3★) · 125 likes
ENGLISH VERSION below „The Witcher: Sirens of the Deep“ – Geralt, Gesang und generische Fantasy Netflix bleibt hartnäckig dabei, das „The Witcher“-Franchise am Leben zu halten – mit mal mehr, mal weniger Erfolg. Nach der chaotischen Prequel-Serie „Blood Origin“ und dem soliden „Nightmare of the Wolf“ gibt’s nun mit „Sirens of the Deep“ wieder einen Animationsfilm. Diesmal geht’s ans Meer, wo eine Mordserie für Unruhe sorgt und Geralt die Wogen glätten muss – im wahrsten Sinne des Wortes. Klingt spannend?… more
1963 · Animation, Family, Fantasy · 1h 19m · G · Where to watch: Disney Plus
If the appeal is magical adventure with a lighter, more whimsical fantasy tone.
Themes
monster hunting, land vs sea conflict, forbidden romance, folklore-inspired fantasy, political tension between species, animated action adventure, adaptation of literary fantasy, moral ambiguity
Topics
fantasy adventure, animated action, sea monsters, mermaids, folklore, swordplay, dark fantasy, adaptation, lightly comedic tone, monster hunter