Grand Blue
ぐらんぶる (original)
When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu named Grand Blue. Iori is looking forward to experiencing college life amidst the roar of the waves, the blazing sun, and his cute cousin who lives with him! However, Iori runs into a group of tough guys playing strip rock-paper-scissors, and ends up joining Peek-a-Boo, the college's diving club!
Starring Yuma Uchida, Ryohei Kimura, Chika Anzai, Kana Asumi, Toa Yukinari, Maaya Uchida, Katsuyuki Konishi, Hiroki Yasumoto
Watch "Grand Blue" on Amazon Prime released in 2018. It's a animation and comedy show, and has a rating of 7.8 out of 10 from Imdb which is usually fine for this kind of show.