ぐらんぶる Season 3

Iori Kitahara has finally found his footing at university, crashing at his uncle's seaside dive shop while the Peek-a-Boo diving club keeps dragging him into drinking games and clothes-free dares. Then his cousin ropes him into helping run a new dive shop in Palau, and the whole crew follows him overseas for a summer of clear water and worse decisions. This third season moves the chaos abroad.