Kaitei no Boukun - Recommendations

Alt title: The Underwater Tyrant

If you're looking for manga similar to Kaitei no Boukun, you might like these titles.

Neko Asobi

Neko Asobi

I agree

Finding Nemo

Finding Nemo

The story follows Marlin, a clown fish, who is highly overprotective of his son, Nemo. When Nemo gets caught by a diver and ends up in a dentist’s fish tank, Marlin stops at nothing to find him and gets a little help along the way from a blue tang named Dory.

I agree

Gon

Gon

He's small, he's scaly, he's Gon! This tiny dinosaur may seem like nothing but a lazy reptile that lounges around and causes mischief, but he's also a pint-sized powerhouse filled with energy who can defend himself when the right kind of food is involved. Whether he's riding a lion like a horse, stealing fish from the mouth of a giant shark or playing house with a group of penguins, Gon manages to get into trouble on every adventure he takes.

I agree

Usotsuki Hime to Moumoku Ouji

Usotsuki Hime to Moumoku Ouji

A ferocious wolf trades her singing voice for a human form so that she can guide a blind prince to the witch's house, deep in the forest. Hopefully there, she can restore his sight.

I agree

Kaze no Chinkorou

Kaze no Chinkorou

The poignant adventures of a wandering penis.

I agree

Marumaru Doubutsuki

Marumaru Doubutsuki

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Kateinai Neko Oukoku

Kateinai Neko Oukoku

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Hagu Hagu

Hagu Hagu

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Neko ga Iru Shiawase

Neko ga Iru Shiawase

I agree

Hamster Nikki

Hamster Nikki

I agree