Deep-Sea Aquarium Magmell

• Name — Deep-Sea Aquarium Magmell • Ja Kanji — マグメル深海水族館 • Ja Romaji — Magumeru Shinkai Suizokukan • Genre — Coming-of-age

• Type — manga • Author — Kiyomi Sugishita • Publisher — Shinchosha • Imprint — Bunch Comics • Magazine — * Go Go Bunch • (April 8, 2017 – February 9, 2018) • Kurage Bunch • (March 9, 2018 – present) • First — April 8, 2017 • Volumes — 10 Deep-Sea Aquarium Magmell is a Japanese manga series written and illustrated by Kiyomi Sugishita. It was initially serialized in Shinchosha's seinen manga magazine Go Go Bunch from April 2017 to February 2018. After the magazine was discontinued, it was transferred to the Kurage Bunch website in March 2018.

The series is set in an aquarium that is 200 meters below Tokyo Bay called "Magmell Deep Sea Aquarium". It is centered around Kotaro Amagi, a young boy who is a fan of deep-sea creatures, and has started working a part-time job as a cleaner in the aquarium.

Written and illustrated by Kiyomi Sugishita, Deep-Sea Aquarium Magmell was initially serialized in Shinchosha's seinen manga magazine Go Go Bunch from April 8, 2017 to February 9, 2018. After the magazine was discontinued, it was transferred to the Kurage Bunch website resuming serialization on March 9, 2018. Its chapters have been compiled into ten tankōbon volumes as of April 2025. In February 2026, Yen Press announced that they had licensed the manga for English publication, with the first volume set to release in August later in the year.