The highly anticipated Season 3 of TV Anime Grand Blue has finally got its release date. Grand Blue Season 3 will release in July 2026. The official website of this anime shared a new visual for this anime:

They also revealed the additional castings appearing in this season:
Sayaka Kotegawa by Sayaka Ohara
Chief by Asami Seto
Maki by Aya Suzaki
Season 3 of Grand Blue will feature our main characters on a journey to the southern island, Palau Islands. The key visual also depicts an unknown character to be appearing in this anime.
More information about this anime will be revealed in the future. Bookmark Otaku Mantra for more updates.
About Grand Blue
Grand Blue or Grand Blue Dreaming is a Japanese manga series written by Kenji Inoue and illustrated by Kimitake Yoshioka. It has been serialized in Kodansha’s Good! Afternoon magazine since April 2014. The story follows Iori Kitahara, who moves to the coastal town of Izu for his freshman year at university, staying above his uncle’s diving shop, “Grand Blue.” He anticipates an ideal college life filled with beautiful girls and good times. However, he quickly gets entangled with the local Diving Club, a group of rowdy, hard-drinking men, leading to unexpected and comedic adventures.
Anime Fans love the series for its humor, character dynamics, and the contrast between the beautiful diving scenes and Iori’s chaotic college life.
Source: Official Website