Grand Blue

is a manga series written by Inoue Kenji and illustrated by Yoshioka Kimitake. It was first serialized in the good! Afternoon magazine starting in the May 2014 issue. The manga is published digitally in English by Kodansha Comics USA under the name of "Grand Blue Dreaming". An anime adaptation by Zero-G is currently airing starting from 14th July 2018.

Plot
A new life begins for Kitahara Iori as he begins his college career near the ocean in Izu city, full of excitement for his new life. He will be moving into his Uncle's diving store "Grand Blue." There he finds the beautiful ocean, beautiful women, and men that love diving and alcohol. Will Iori be able to live his dream college life?

Official

 * Grand Blue on good! Afternoon website (Japanese)
 * Grand Blue official anime website

Other Sources

 * Grand Blue on Wikipedia (English)
 * Grand Blue on Japanese Wikipedia