Question 1

Where is Yonaha Beach?

Accepted Answer

Yonaha Beach is in Miyakojima, Okinawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Grand Blue Dreaming does Yonaha Beach appear in?

Accepted Answer

Yonaha Beach appears in EP12 of Grand Blue Dreaming.

Question 3

Can I visit Yonaha Beach?

Accepted Answer

Yes. Yonaha Beach is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Grand Blue Dreaming filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Yonaha Beach is one of those real places (EP12).