It is located at the tip of the Otsuki Peninsula, which juts out to the south of Sukumo Bay, and is connected to the peninsula by two bridges. "Kashiwa Island"
The emerald green water is so clear that "ships appear to be floating in the air," and it has become a popular tourist spot.
It faces the sea area where the Bungo Channel and the Kuroshio Current collide.
It is said that one-third of the fish species in Japan's oceans live here, and it is known as one of the world's leading diving spots.
Around Kashiwa Island, there are places where you can swim, such as the foot of Kashiwa Island Bridge, Kashiwa Island Shirahama, and Ryugahama Campground, and they are crowded with people during the summer season.
Corals and colorful tropical fish can be observed even in shallow waters, and activities such as snorkeling are also popular.
Kashiwa Island is about 4km in circumference, is home to about 400 residents.
The townscape has a nostalgic atmosphere, and it is recommended to take a leisurely stroll.