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Kasado Island: A Seto Inland Sea Island Famous for Natural Flounder Aquaculture

🐡 Yamaguchi|May 14, 2026

Kasado Island: The Home of Natural Flounder and Seto Inland Sea Nature

Kasado Island, connected to the mainland by Kasado Bridge in Shunan City, Yamaguchi Prefecture, is a small island approximately 22 kilometers in circumference. Surrounded by the highly transparent Seto Inland Sea, the island is renowned as a production area for Kasado flounder (natural flounder raised in fish pens), with fresh flounder cuisine available to enjoy at island restaurants and guesthouses.

Enjoying Flounder Cuisine

"Kasado Flounder" is the highest quality natural flounder raised in fish pens, characterized by a light yet refined umami flavor. Various cooking styles can be enjoyed including flounder sashimi, flounder hot pot, and fried flounder.

Swimming and Marine Sports

Kasado Island has swimming beaches including "Motoura Beach," bustling with families in summer. Marine activities such as fishing and snorkeling are also well-developed.

Kasado Island Nature

Hiking courses showcasing nature through the four seasons are maintained around "Kasado Island National Minshuku Hanaguri" on the island. The natural bounty of spring cherry blossoms, summer greenery, and autumn foliage can be felt throughout the year.

Access

Accessible by bus or car via Kasado Bridge from JR Kudamatsu Station. The appeal is that you can easily visit while maintaining the feeling of a remote island since it is connected by a bridge.

📍 Location & Access

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