Season 1
When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu named Grand Blue. He is looking forward to experiencing college life amidst the roar of the waves, the blazing sun, and his cute cousin! However, he runs into a group of guys playing strip rock-paper-scissors, and ends up joining the college's diving club! ©Kodansha/Grand Blue Production Committee