I'm writing this review because I hope more people check out this series! It seems to be an educational-type of manga about deep sea creatures which at first glance might not pique your interest. However, the author uses a story-based episodic plot in each chapter, where a new character and new sea animal are introduced. As we gradually learn more about both, our MC Koutarou also develops his understanding of what it means to work at the world's first deep sea aquarium, Magmell.
I didn't have high expectations for this series at first, but the art is spectacularly exceptional and I genuinely grew more and more interested in deep sea animals as the series went on. It's a great casual read, so I recommend this if you want to see beautiful art and learn something new!
PS. My twitter is @thequietclover if anyone wants to chat about manga!