Grand Blue Season 3

Iori's college shenanigans head overseas! Just as he's finally starting to get the hang of university life, crashing at his uncle's dive shop while balancing the booze-fueled antics of his diving club, Iori's cousin enlists him to help run a new dive shop in Palau. Between crystal-clear dives and his diving group that can't resist partying it up and stripping down, Iori's in for a wild summer.

(Source: Crunchyroll)