The lazy, dive-mad degenerates are back — and this time they’re getting on a plane. Grand Blue Dreaming Season 3 has a confirmed premiere date of 6 July 2026, and the official main PV from the NBCUniversal Anime/Music channel dropped today with the full ending theme reveal.
Official Main PV — Ending Theme Revealed
The new PV is the first proper full-cut trailer for Season 3, and it confirms what fans have been waiting to hear: the ending theme is “Hadaka no Mermaid” (裸のマーメイド) performed by MAMESHiBA NO TAiGUN, with comedy legend and actor Kuro-chan on production duties. The song suits the summer beach-trip energy perfectly.
The opening theme “Natsuko” by FUNKY MONKEY BΛBY’S — first announced on 24 May — is also previewed in the new PV, and it hits exactly the same nostalgic summer-pop note you’d want from a show about college students living in swim trunks.
The Gang Goes to Palau
Season 3 takes Iori Kitahara and company overseas for the first time in the series — the story is set in Palau, the Pacific island nation famous for its crystal-clear diving waters and marine biodiversity. It’s a huge change of scenery from the Izu Coast, and the PV leans hard into the tropical vibe: turquoise water, sunlit reefs, and the gang looking adequately underprepared for international travel.
Production continues at studios ZERO-G and Liber under returning director Shinji Takamatsu, with character design by Hideoki Kusama and music by Yukari Hashimoto. The creative core from Seasons 1 and 2 is intact, which should reassure fans who loved the show’s comedic rhythm.
Cast: Old Faces and New
The returning core is all present: Yuma Uchida as Iori, Ryohei Kimura as Kohei, and Chika Anzai as Chisa. New to Season 3 are some strong additions — Sayaka Ohara (the great Erza Scarlet, Beatrice from Re:ZERO) plays Sayaka Kotegawa, Asami Seto voices the Chief of the Palau dive shop Dolphin, Aya Suzaki voices Maki, and M·A·O (Iris from Fire Force) joins as Carina.
Advance Screening and Broadcast Schedule
Before the TV premiere, an advance screening of Episode 1 will be held on 19 June 2026 at 6:00 PM JST at Shinjuku Baltic 9 in Tokyo. The regular broadcast begins 6 July 2026 on TOKYO MX and BS11, airing Mondays at 24:00 JST (which is technically 12:00 AM Tuesday morning in Japan).
Where to Watch in Singapore
Crunchyroll carried both Season 1 (2018) and Season 2 (2025) for Singapore and Southeast Asia, and while Crunchyroll SEA streaming for Season 3 has not been officially confirmed at time of writing, it would be a significant surprise if they didn’t simulcast it given the track record. Keep an eye on the News section — we’ll update when streaming details land.
Last words
Grand Blue Dreaming occupies a rare spot in the anime world: it’s a pure comedy that gets genuinely funnier with each rewatch, and the manga — over 10 million copies worldwide — has been building toward the Palau arc for years. For Singapore fans who’ve followed the series on Crunchyroll, July 6 is a date to mark. The main PV is out now on YouTube if you want to experience the Palau colours yourself before the season kicks off.