Merman in My Tub poster
Where to stream

Merman in My Tub

6.220141 seasonTV SeriesAnimationComedySci-Fi & Fantasy

Tatsumi is a high school student who lives on his own, until a merman named Wakasa takes up residence in his bathtub. His solitary lifestyle is turned upside down by the self-centered (but handsome) new roommate.

DirectorSayo Aoi

Where to watch

CrunchyrollCrunchyrollCrunchyroll Amazon ChannelCrunchyroll Amazon Channel
Availability shown for United States · rights vary by country

Seasons & Episodes

E1
The Special Circumstances of My Bathtub
Oct 6, 2014
E2
The Severe Circumstances of My Household Budget
Oct 13, 2014
E3
The Circumstances of Wakasa's Friends: Takasu Edition
Oct 20, 2014
E4
The Circumstances of Wakasa's Friends: Mikuni Edition
Oct 27, 2014
E5
The Halloween Circumstances of My Household
Nov 3, 2014
E6
The Circumstances of My Bubbles
Nov 10, 2014
E7
My Sibling Circumstances
Nov 17, 2014
E8
The Trendy Circumstances of Modern Men
Nov 24, 2014
E9
My Naked Circumstances
Dec 1, 2014
E10
The Circumstances of Wakasa's Friends: Maki Edition
Dec 8, 2014
E11
The Seven Transformations of my Bathtub Circumstances
Dec 15, 2014
E12
The Circumstances of Wakasa Staying Home Alone
Dec 22, 2014
E13
The Circumstances of Wakasa's Employment
Dec 29, 2014

Cast

NSNobunaga Shimazaki
Nobunaga Shimazaki
Tatsumi (voice)
YUYuuichirou Umehara
Yuuichirou Umehara
Wakasa (voice)
YKYoshihisa Kawahara
Yoshihisa Kawahara
Ahiru-chan (voice)
IKIbuki Kido
Ibuki Kido
Kasumi (voice)
KTKenjiro Tsuda
Kenjiro Tsuda
Maki (voice)
NHNatsuki Hanae
Natsuki Hanae
Mikuni (voice)
TSTatsuhisa Suzuki
Tatsuhisa Suzuki
Takasu (voice)

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Merman in My Tub — streaming FAQ

Which OTT platform streams Merman in My Tub?

Merman in My Tub is streaming on Crunchyroll in United States. It's not currently on Netflix.

Is Merman in My Tub on Netflix?

No, Merman in My Tub is not on Netflix in United States as of September 2026. It's currently on Crunchyroll.

Is Merman in My Tub on Amazon Prime Video?

No, Merman in My Tub isn't on Amazon Prime Video in United States right now. It's on Crunchyroll instead.

Where can I watch Merman in My Tub for free?

Merman in My Tub is available on Crunchyroll in United States, but you'll need an active subscription — there's no free option right now.

How many seasons are in Merman in My Tub?

Merman in My Tub has 1 season in total (13 episodes). The series concluded in 2014.

Are all episodes of Merman in My Tub out yet?

Yes — all 13 episodes across 1 season of Merman in My Tub are out and available to stream.

Is there a Season 2 of Merman in My Tub?

No — Merman in My Tub ended after 1 season, so there is no Season 2.

What manga is Merman in My Tub based on?

Merman in My Tub is based on Merman in My Tub by Itokichi.